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Martin SL, Reid AJ, Verkhratsky A, Magnaghi V, Faroni A. Gene expression changes in dorsal root ganglia following peripheral nerve injury: roles in inflammation, cell death and nociception. Neural Regen Res 2019; 14:939-947. [PMID: 30761997 PMCID: PMC6404509 DOI: 10.4103/1673-5374.250566] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Subsequent to a peripheral nerve injury, there are changes in gene expression within the dorsal root ganglia in response to the damage. This review selects factors which are well-known to be vital for inflammation, cell death and nociception, and highlights how alterations in their gene expression within the dorsal root ganglia can affect functional recovery. The majority of studies used polymerase chain reaction within animal models to analyse the dynamic changes following peripheral nerve injuries. This review aims to highlight the factors at the gene expression level that impede functional recovery and are hence are potential targets for therapeutic approaches. Where possible the experimental model, specific time-points and cellular location of expression levels are reported.
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Affiliation(s)
- Sarah L Martin
- Blond McIndoe Laboratories, School of Biological Sciences, University of Manchester, Manchester, UK
| | - Adam J Reid
- Blond McIndoe Laboratories, School of Biological Sciences, University of Manchester; University Hospital of South Manchester, Department of Plastic and Burns, Manchester, Manchester, UK
| | - Alexei Verkhratsky
- Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Valerio Magnaghi
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy
| | - Alessandro Faroni
- Blond McIndoe Laboratories, School of Biological Sciences, University of Manchester, Manchester, UK
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52
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Wang D, Zhang M, Wang T, Cai M, Qian F, Sun Y, Wang Y. Green tea polyphenols prevent lipopolysaccharide-induced inflammatory liver injury in mice by inhibiting NLRP3 inflammasome activation. Food Funct 2019; 10:3898-3908. [DOI: 10.1039/c9fo00572b] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Inflammatory liver diseases present a significant public health problem.
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Affiliation(s)
- Dongxu Wang
- State Key Laboratory of Tea Plant Biology and Utilization
- School of Tea and Food Science & Technology
- Anhui Agricultural University
- Hefei
- PR China
| | - Man Zhang
- State Key Laboratory of Tea Plant Biology and Utilization
- School of Tea and Food Science & Technology
- Anhui Agricultural University
- Hefei
- PR China
| | - Taotao Wang
- Department of Clinical Nutrition
- Affiliated Hospital of Jiangsu University
- Zhenjiang
- PR China
| | - Min Cai
- State Key Laboratory of Tea Plant Biology and Utilization
- School of Tea and Food Science & Technology
- Anhui Agricultural University
- Hefei
- PR China
| | - Frank Qian
- Pritzker School of Medicine
- University of Chicago
- Chicago
- USA
| | - Yue Sun
- State Key Laboratory of Tea Plant Biology and Utilization
- School of Tea and Food Science & Technology
- Anhui Agricultural University
- Hefei
- PR China
| | - Yijun Wang
- State Key Laboratory of Tea Plant Biology and Utilization
- School of Tea and Food Science & Technology
- Anhui Agricultural University
- Hefei
- PR China
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53
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Ahechu P, Zozaya G, Martí P, Hernández-Lizoáin JL, Baixauli J, Unamuno X, Frühbeck G, Catalán V. NLRP3 Inflammasome: A Possible Link Between Obesity-Associated Low-Grade Chronic Inflammation and Colorectal Cancer Development. Front Immunol 2018; 9:2918. [PMID: 30619282 PMCID: PMC6297839 DOI: 10.3389/fimmu.2018.02918] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Accepted: 11/28/2018] [Indexed: 02/06/2023] Open
Abstract
Emerging evidence reveals that adipose tissue-associated inflammation is a main mechanism whereby obesity promotes colorectal cancer risk and progression. Increased inflammasome activity in adipose tissue has been proposed as an important mediator of obesity-induced inflammation and insulin resistance development. Chronic inflammation in tumor microenvironments has a great impact on tumor development and immunity, representing a key factor in the response to therapy. In this context, the inflammasomes, main components of the innate immune system, play an important role in cancer development showing tumor promoting or tumor suppressive actions depending on the type of tumor, the specific inflammasome involved, and the downstream effector molecules. The inflammasomes are large multiprotein complexes with the capacity to regulate the activation of caspase-1. In turn, caspase-1 enhances the proteolytic cleavage and the secretion of the inflammatory cytokines interleukin (IL)-1β and IL-18, leading to infiltration of more immune cells and resulting in the generation and maintenance of an inflammatory microenvironment surrounding cancer cells. The inflammasomes also regulate pyroptosis, a rapid and inflammation-associated form of cell death. Recent studies indicate that the inflammasomes can be activated by fatty acids and high glucose levels linking metabolic danger signals to the activation of inflammation and cancer development. These data suggest that activation of the inflammasomes may represent a crucial step in the obesity-associated cancer development. This review will also focus on the potential of inflammasome-activated pathways to develop new therapeutic strategies for the prevention and treatment of obesity-associated colorectal cancer development.
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Affiliation(s)
- Patricia Ahechu
- Department of Surgery, Clínica Universidad de Navarra, Pamplona, Spain
| | - Gabriel Zozaya
- Department of Surgery, Clínica Universidad de Navarra, Pamplona, Spain
| | - Pablo Martí
- Department of Surgery, Clínica Universidad de Navarra, Pamplona, Spain
| | | | - Jorge Baixauli
- Department of Surgery, Clínica Universidad de Navarra, Pamplona, Spain
| | - Xabier Unamuno
- Metabolic Research Laboratory, Clínica Universidad de Navarra, Pamplona, Spain.,CIBER Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Pamplona, Spain
| | - Gema Frühbeck
- Metabolic Research Laboratory, Clínica Universidad de Navarra, Pamplona, Spain.,CIBER Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Pamplona, Spain.,Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra, Pamplona, Spain.,Department of Endocrinology & Nutrition, Clínica Universidad de Navarra, Pamplona, Spain
| | - Victoria Catalán
- Metabolic Research Laboratory, Clínica Universidad de Navarra, Pamplona, Spain.,CIBER Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Pamplona, Spain.,Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra, Pamplona, Spain
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54
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Leone F, Gigliotti P, La Russa A, Lofaro D, Perri A, Vizza D, Lupinacci S, Toteda G, Bonofiglio M, Presta P, Talarico R, Aquino B, Bonofiglio R. NFKB1 promoter polymorphism: A new predictive marker of cytomegalovirus infection after kidney transplantation. Transpl Infect Dis 2018; 21:e13027. [PMID: 30431214 DOI: 10.1111/tid.13027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 10/11/2018] [Accepted: 10/25/2018] [Indexed: 12/12/2022]
Abstract
INTRODUCTION Cytomegalovirus (CMV) infection represents a common cause of morbidity and mortality in kidney transplant recipients (KTR). The NF-kB signaling pathway is highly involved in the pathogenesis of CMV infection. The -94ins/delATTG functional polymorphism in the promoter of NFKB1 has been associated with low intracellular levels of the protein and high incidence of inflammatory and autoimmune disease. In this study, we evaluated the association of this NFKB1 polymorphism with the risk of CMV infection. METHODS CMV infection was defined as virus isolation or detection of viral antigens or nucleic acid in any body fluid or tissue specimen. Using Cox regression and survival analysis, we analyzed the association between the polymorphism and CMV infection as well as recurrence in the first 12 months after transplantation. RESULTS We analyzed the -94ins/delATTG NFKB1 polymorphism of 189 KTRs. The 65% of CMV infections occurred in ins/ins group. Survival free from CMV infection was 54.7% for ins/ins group and 79.4% for deletion carriers one year after transplantation (P < 0.0001). At multivariate regression, deletion carriers showed a lower risk of CMV infection and recurrence with respect to ins/ins KTRs (HR = 0.224 P = 0.0002; HR = 0.307, P = 0.012, respectively). CONCLUSIONS In conclusion, pretransplantation screening for NFKB1 -94ins/delATTG polymorphism may predict CMV infection and improve the management of patients at higher risk of infection in the post-transplant period.
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Affiliation(s)
- Francesca Leone
- Kidney and Transplantation" Research Center, Department of Nephrology, Dialysis and Transplantation, Annunziata Hospital, Cosenza, Italy
| | - Paolo Gigliotti
- Kidney and Transplantation" Research Center, Department of Nephrology, Dialysis and Transplantation, Annunziata Hospital, Cosenza, Italy
| | - Antonella La Russa
- Kidney and Transplantation" Research Center, Department of Nephrology, Dialysis and Transplantation, Annunziata Hospital, Cosenza, Italy
| | - Danilo Lofaro
- Kidney and Transplantation" Research Center, Department of Nephrology, Dialysis and Transplantation, Annunziata Hospital, Cosenza, Italy
| | - Anna Perri
- Kidney and Transplantation" Research Center, Department of Nephrology, Dialysis and Transplantation, Annunziata Hospital, Cosenza, Italy
| | - Donatella Vizza
- Kidney and Transplantation" Research Center, Department of Nephrology, Dialysis and Transplantation, Annunziata Hospital, Cosenza, Italy
| | - Simona Lupinacci
- Kidney and Transplantation" Research Center, Department of Nephrology, Dialysis and Transplantation, Annunziata Hospital, Cosenza, Italy
| | - Giuseppina Toteda
- Kidney and Transplantation" Research Center, Department of Nephrology, Dialysis and Transplantation, Annunziata Hospital, Cosenza, Italy
| | - Martina Bonofiglio
- Kidney and Transplantation" Research Center, Department of Nephrology, Dialysis and Transplantation, Annunziata Hospital, Cosenza, Italy
| | - Pierangela Presta
- Kidney and Transplantation" Research Center, Department of Nephrology, Dialysis and Transplantation, Annunziata Hospital, Cosenza, Italy
| | - Roberta Talarico
- Kidney and Transplantation" Research Center, Department of Nephrology, Dialysis and Transplantation, Annunziata Hospital, Cosenza, Italy
| | - Benedetta Aquino
- Kidney and Transplantation" Research Center, Department of Nephrology, Dialysis and Transplantation, Annunziata Hospital, Cosenza, Italy
| | - Renzo Bonofiglio
- Kidney and Transplantation" Research Center, Department of Nephrology, Dialysis and Transplantation, Annunziata Hospital, Cosenza, Italy
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Zhao Y, Xu G, Wang S, Yi X, Wu W. Chitosan oligosaccharides alleviate PM 2.5-induced lung inflammation in rats. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:34221-34227. [PMID: 30291606 DOI: 10.1007/s11356-018-3365-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 09/27/2018] [Indexed: 05/27/2023]
Abstract
Air pollution of particulate matter (PM), especially PM2.5, has become a major public health problem in China. Exploration of therapeutic and preventive measures against PM2.5 toxicity is of practical significance. The aim of this study was to examine the inhibitory effects of chitosan oligosaccharides (COS) on PM2.5-induced lung inflammation in rats. Forty SPF (specific pathogen-free) male Wistar rats weighing 200-220 g were randomly divided into four groups: control group, COS group, PM2.5 group, and PM2.5+COS group. COS was pre-administered to rats by gavage at a single dose of 500 mg/kg 2 h before intratracheal instillation of PM2.5 at a single dose of 1.2 mg/kg daily for 3 consecutive days. Normal saline (NS) was used as negative control. Twenty-four hours after the last instillation of PM2.5, rats were sacrificed and subjected to bronchoalveolar lavage (BAL). The BAL fluids (BALF) were collected for measurement of levels of total proteins, lactate dehydrogenase (LDH), interleukin-1 (IL-1β), IL-8, and tumor necrosis factor-ɑ (TNF-ɑ) using colorimetric or ELISA kits. Levels of total proteins, LDH activities, and pro-inflammatory mediators including IL-1β, IL-8, and TNF-ɑ in BALF of rats in PM2.5 group significantly increased in comparison with those of the control group. Pre-treatment of rats with COS markedly blocked PM2.5-induced increase in LDH, IL-8, and TNF-ɑ levels in BALF. In conclusion, PM2.5 exposure induces rat lung inflammation, which could be ameliorated by the pre-treatment of COS.
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Affiliation(s)
- Yingzheng Zhao
- School of Public Health, Xinxiang Medical University, 601 Jinsui Street, Xinxiang, 453003, Henan Province, People's Republic of China
| | - Guangcui Xu
- School of Public Health, Xinxiang Medical University, 601 Jinsui Street, Xinxiang, 453003, Henan Province, People's Republic of China
| | - Shouying Wang
- School of Public Health, Xinxiang Medical University, 601 Jinsui Street, Xinxiang, 453003, Henan Province, People's Republic of China
| | - Xianwen Yi
- School of Public Health, Xinxiang Medical University, 601 Jinsui Street, Xinxiang, 453003, Henan Province, People's Republic of China
| | - Weidong Wu
- School of Public Health, Xinxiang Medical University, 601 Jinsui Street, Xinxiang, 453003, Henan Province, People's Republic of China.
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56
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Novinbahador T, Nourazarian A, Asgharzadeh M, Rahbarghazi R, Avci ÇB, Bagca BG, Ozates NP, Karbasforoush S, Khaki‐Khatibi F. Docosahexaenoic acid attenuates the detrimental effect of palmitic acid on human endothelial cells by modulating genes from the atherosclerosis signaling pathway. J Cell Biochem 2018; 119:9752-9763. [DOI: 10.1002/jcb.27294] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 06/26/2018] [Indexed: 12/22/2022]
Affiliation(s)
- Tannaz Novinbahador
- Drug Applied Research Center Tabriz University of Medical Sciences Tabriz Iran
- Department of Biochemistry and Clinical Laboratories Faculty of Medicine, Tabriz University of Medical Sciences Tabriz Iran
| | - Alireza Nourazarian
- Department of Biochemistry and Clinical Laboratories Faculty of Medicine, Tabriz University of Medical Sciences Tabriz Iran
| | - Mohammad Asgharzadeh
- Biotechnology Research Center and Department of Laboratory Sciences, Faculty of Paramedical Sciences Tabriz University of Medical Sciences Tabriz Iran
| | - Reza Rahbarghazi
- Stem Cell Research Center Tabriz University of Medical Sciences Tabriz Iran
- Department of Applied Cell Sciences, Faculty of Advanced Medical Sciences Tabriz University of Medical Sciences Tabriz Iran
| | - Çıgır Biray Avci
- Department of Medical Biology, Faculty of Medicine Ege University Izmir Turkey
| | - Bakiye Goker Bagca
- Department of Medical Biology, Faculty of Medicine Ege University Izmir Turkey
| | | | - Saeede Karbasforoush
- Department of Biochemistry and Clinical Laboratories Faculty of Medicine, Tabriz University of Medical Sciences Tabriz Iran
| | - Fatemeh Khaki‐Khatibi
- Drug Applied Research Center Tabriz University of Medical Sciences Tabriz Iran
- Department of Biochemistry and Clinical Laboratories Faculty of Medicine, Tabriz University of Medical Sciences Tabriz Iran
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57
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Polysaccharide isolated from Phellinus linteus mycelia exerts anti-inflammatory effects via MAPK and PPAR signaling pathways. Carbohydr Polym 2018; 200:487-497. [PMID: 30177190 DOI: 10.1016/j.carbpol.2018.08.021] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 07/18/2018] [Accepted: 08/06/2018] [Indexed: 12/30/2022]
Abstract
In the present study, the anti-inflammatory function of Phellinus linteus polysaccharide (PLP) was investigated in animal and cell inflammation models, and the anti-inflammatory mechanism of PLP was also explored. Sixty 8-week ICR mice were randomly divided into 3 groups, and DSS group and DSS + PLP group mice received 2.0% DSS and PLP was orally administered at 500 mg/kg/day. Our data showed that PLP administration obviously improved the health status of mice and inhibited DSS-induced pathological alterations and significantly reduced inflammatory cytokine expressions in the colonic tissues. In lipopolysaccharide-induced inflammation cell model, PLP supplement also significantly reduced inflammatory cytokine expressions and inhibited MAPK pathway as well as the translocations of NF-κB and AP-1. Meanwhile, PLP supplement regulated PPARα and PPARγ phosphorylation and blocked MAPK activation. Taken together, PLP exhibits anti-inflammatory function and its molecular mechanism may be involved in MAPK and PPAR signal pathways, which reduce the expressions of inflammatory cytokines.
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58
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Yang J, Li S, Wang L, Du F, Zhou X, Song Q, Zhao J, Fang R. Ginsenoside Rg3 Attenuates Lipopolysaccharide-Induced Acute Lung Injury via MerTK-Dependent Activation of the PI3K/AKT/mTOR Pathway. Front Pharmacol 2018; 9:850. [PMID: 30116194 PMCID: PMC6082957 DOI: 10.3389/fphar.2018.00850] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 07/13/2018] [Indexed: 12/17/2022] Open
Abstract
Acute lung injury (ALI) is a common clinical disease with high morbidity in both humans and animals. Ginsenoside Rg3, a type of traditional Chinese medicine extracted from ginseng, is widely used to cure many inflammation-related diseases. However, the specific molecular mechanism of the effects of ginsenoside Rg3 on inflammation has rarely been reported. Thus, we established a mouse model of lipopolysaccharide (LPS)-induced ALI to investigate the immune protective effects of ginsenoside Rg3 and explore its molecular mechanism. In wild type (WT) mice, we found that ginsenoside Rg3 treatment significantly mitigated pathological damages and reduced myeloperoxidase (MPO) activity as well as the production of pro-inflammatory cytokines tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β) and interleukin-6 (IL-6); furthermore, the production of anti-inflammatory mediators interleukin-10 (IL-10) and transforming growth factor-β (TGF-β), polarization of M2 macrophages and expression levels of the phosphorylation of phosphatidylinositol 3-hydroxy kinase (PI3K), protein kinase B (PKB, also known as AKT), mammalian target of rapamycin (mTOR) and Mer receptor tyrosine kinase (MerTK) were promoted. However, there were no significant differences with regards to the pathological damage, MPO levels, inflammatory cytokine levels, and protein expression levels of the phosphorylation of PI3K, AKT and mTOR between the LPS treatment group and ginsenoside Rg3 group in MerTK-/- mice. Taken together, the present study demonstrated that ginsenoside Rg3 could attenuate LPS-induced ALI by decreasing the levels of pro-inflammatory mediators and increasing the production of anti-inflammatory cytokines. These processes were mediated through MerTK-dependent activation of its downstream the PI3K/AKT/mTOR pathway. These findings identified a new site of the specific anti-inflammatory mechanism of ginsenoside Rg3.
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Affiliation(s)
- Jing Yang
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Senyang Li
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Luyao Wang
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Fen Du
- Hubei Center for Animal Diseases Control and Prevention, Wuhan, China
| | - Xiaoliu Zhou
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Qiqi Song
- College of Animal Science and Veterinary Medicine, Tianjin Agricultural University, Tianjin, China
| | - Junlong Zhao
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Rui Fang
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
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Xu X, Wang L, Zhu D, Wang Y, Jiang W. Protein binding protection in combination with DNA masking for sensitive and reliable transcription factor detection. Talanta 2018; 186:293-298. [DOI: 10.1016/j.talanta.2018.04.047] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 04/04/2018] [Accepted: 04/15/2018] [Indexed: 10/17/2022]
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60
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Ji N, Pan S, Shao C, Chen Y, Zhang Z, Wang R, Qiu Y, Jin M, Kong D. Spinacetin Suppresses the Mast Cell Activation and Passive Cutaneous Anaphylaxis in Mouse Model. Front Pharmacol 2018; 9:824. [PMID: 30104977 PMCID: PMC6077219 DOI: 10.3389/fphar.2018.00824] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Accepted: 07/09/2018] [Indexed: 12/21/2022] Open
Abstract
We previously reported the anti-inflammatory and anti-asthmatic activities of the extract of the Inula japonica Thunb. Aiming for discovery of a novel anti-inflammatory compound, we isolated spinacetin from the extract and investigated its in vitro and in vivo anti-inflammatory effect and the related mechanism. Effect of spinacetin on the Syk signaling pathway was studied in bone marrow-derived mast cells (BMMCs), and that on the nuclear factor-κB (NF-κB) and mitogen-activated protein kinases (MAPKs) was investigated in Rat basophilic leukemia (RBL)-2H3 cells and human mast cell line (HMC-1). The in vivo anti-inflammatory activity was assessed with passive cutaneous anaphylaxis (PCA) reaction assay. Spinacetin significantly inhibited the release of histamine, and production of inflammatory mediators such as leukotriene C4 (LTC4) and interlukin-6 (IL-6) in IgE/Ag stimulated BMMCs. Analysis of the signaling pathways demonstrated that spinacetin inhibited activation of Syk, linker of activated T cells (LAT), phospholipase Cγ (PLCγ), cytosolic phospholipase A2 (cPLA2), MAPKs, Akt/NF-κB, and intracellular Ca2+ mobilization but with no effect on Fyn and Lyn. On the other hand, spinacetin suppressed IgE/Ag-induced activation of RBL-2H3 cells with inhibition against phosphorylation of extracellular signal regulated-protein kinase (ERK), c-Jun-NH2-terminal kinase (JNK), p38 MAPKs, PLCγ, translocation of cPLA2, and Akt/IκBα/NF-κB signal. However, spinacetin had no effect on PMA and A23187-induced activation of HMC-1. Furthermore, oral administration of spinacetin dose-dependently attenuated IgE/Ag-mediated PCA reaction in mouse model. Taken together, spinacetin showed the activities in preventing inflammatory processes, which might be at least partially attributed to the abolishment of Syk-dependent activation of IgE/Ag-mediated mast cells.
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Affiliation(s)
- Ning Ji
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, China
| | - Shunli Pan
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, China
| | - Chen Shao
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, China
| | - Yufen Chen
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, China.,Pharmacy Department, Tanggu Hospital of Infectious Diseases of Tianjin Binhai New Area, Tianjin, China
| | - Zhe Zhang
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, China
| | - Ran Wang
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, China
| | - Yuling Qiu
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, China
| | - Meihua Jin
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, China
| | - Dexin Kong
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, China
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Wang D, Gao Q, Zhao G, Kan Z, Wang X, Wang H, Huang J, Wang T, Qian F, Ho CT, Wang Y. Protective Effect and Mechanism of Theanine on Lipopolysaccharide-Induced Inflammation and Acute Liver Injury in Mice. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:7674-7683. [PMID: 29969892 DOI: 10.1021/acs.jafc.8b02293] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Theanine, a unique bioactive constituent from tea ( Camellia sinensis) leaves, is widely used as a functional ingredient and dietary supplement. To evaluate the anti-inflammatory and hepatoprotective effects of theanine and its molecular mechanism, the lipopolysaccharide (LPS)-induced inflammation mouse model was employed in this study. The survival rate of mice in the theanine-treated group increased significantly compared with that of LPS-only group mice. Furthermore, ICR male mice were randomly divided into three or four groups: control, LPS (LPS treatment only), LPS + theanine (20 mg/kg/day), and theanine (theanine treatment only). The results showed that compared with the LPS group, the liver damage and oxidative stress of the theanine-treated group decreased significantly, based on plasma alanine aminotransferase (ALT) and aspartate aminotransferase (AST) concentrations, hepatic total superoxide dismutase (T-SOD), and malondialdehyde (MDA) levels, and histological scores and apoptosis [terminal deoxynucleotide transferase-mediated deoxyuridine triphosphate nick end-labeling (TUNEL) staining and caspase-3 activity] in the liver tissues. Furthermore, compared with no treatment, pretreatment with theanine significantly decreased the release of interleukin (IL)-1β and tumor necrosis factor (TNF)-α, inhibited the expression of several inflammatory factors (including IL-1β, TNF-α, and IL-6), and increased the IL-10/interferon (IFN)-γ ratio in the hepatic tissues. In the LPS-induced inflammation model, theanine inhibited the expression of proinflammatory mediators involved in the nuclear factor-kappa B (NF-κB) pathway, such as inducible nitric oxide synthase (iNOS) and matrix metalloproteinase-3 (MMP-3), and attenuated the phosphorylation of NF-κB in the hepatic tissues. Moreover, theanine suppressed the acute-phase response (elevated nitric oxide and C-reactive protein levels). Furthermore, theanine suppressed the LPS-induced inflammatory state by normalizing hypothalamic-pituitary-adrenal (HPA) axis hyperactivity. Taken together, the results suggest that theanine potentially ameliorates LPS-induced inflammation and acute liver injury; molecular mechanism of action may involve normalization of HPA axis hyperactivity and inactivation of the NF-κB signaling pathway.
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Affiliation(s)
- Dongxu Wang
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology , Anhui Agricultural University , Hefei , Anhui 230036 , China
- International Joint Laboratory on Tea Chemistry and Health Effects , Anhui Agricultural University , Hefei , Anhui 230036 , China
| | - Qiang Gao
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology , Anhui Agricultural University , Hefei , Anhui 230036 , China
| | - Guangshan Zhao
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology , Anhui Agricultural University , Hefei , Anhui 230036 , China
| | - Zhipeng Kan
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology , Anhui Agricultural University , Hefei , Anhui 230036 , China
| | - Xiaoxiao Wang
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology , Anhui Agricultural University , Hefei , Anhui 230036 , China
| | - Haisong Wang
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology , Anhui Agricultural University , Hefei , Anhui 230036 , China
- International Joint Laboratory on Tea Chemistry and Health Effects , Anhui Agricultural University , Hefei , Anhui 230036 , China
| | - Jinbao Huang
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology , Anhui Agricultural University , Hefei , Anhui 230036 , China
- International Joint Laboratory on Tea Chemistry and Health Effects , Anhui Agricultural University , Hefei , Anhui 230036 , China
| | - Taotao Wang
- Department of Clinical Nutrition , Affiliated Hospital of Jiangsu University , Zhenjiang , Jiangsu 212000 , China
| | - Frank Qian
- Pritzker School of Medicine , University of Chicago , Chicago , Illinois 60637 , United States
| | - Chi-Tang Ho
- International Joint Laboratory on Tea Chemistry and Health Effects , Anhui Agricultural University , Hefei , Anhui 230036 , China
- Department of Food Science , Rutgers University , New Brunswick , New Jersey 08901 , United States
| | - Yijun Wang
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology , Anhui Agricultural University , Hefei , Anhui 230036 , China
- International Joint Laboratory on Tea Chemistry and Health Effects , Anhui Agricultural University , Hefei , Anhui 230036 , China
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62
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Dietary curcumin supplementation attenuates inflammation, hepatic injury and oxidative damage in a rat model of intra-uterine growth retardation. Br J Nutr 2018; 120:537-548. [PMID: 30043720 DOI: 10.1017/s0007114518001630] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Rats with a normal birth weight (NBW) or intra-uterine growth retardation (IUGR) were fed basic diets (NBW and IUGR groups) or basic diets supplemented with curcumin (NC and IC groups) from 6 to 12 weeks. The body weight of IUGR rats was lower (P<0·05) than that of the controls. Rats with IUGR showed higher (P<0·05) concentrations of TNF-α, IL-1β and IL-6; higher (P<0·05) activities of aspartate aminotransferase (AST) and alanine aminotransferase (ALT) in their serum; and increased (P<0·05) concentrations of malondialdehyde (MDA), protein carbonyl (PC) and 8-hydroxy-2'-deoxyguanosine (8-OHDG) in the liver compared with the NBW rats. The livers of IUGR rats exhibited a lower (P<0·05) superoxide dismutase activity and decreased (P<0·05) metabolic efficiency of the hepatic glutathione redox cycle compared with those of the NBW rats. In response to dietary curcumin supplementation, concentrations of inflammatory cytokines and activities of AST and ALT in the serum and MDA, PC and 8-OHDG in the liver were lower (P<0·05), and the hepatic glutathione redox cycle in the liver was improved (P<0·05) in the IC group than in the IUGR group. These results were associated with lower (P<0·05) phosphorylated levels of the NF-κB pathway and Janus kinase 2 (JAK2) and higher (P<0·05) mRNA expression of genes involved in the nuclear factor, erythroid 2-like 2 (Nfe2l2)/antioxidant response element (ARE) pathway in the liver of the IC rats than that of the IUGR rats. Maternal undernutrition decreased birth weight and led to inflammation, oxidative damage and injury in rats. Curcumin appeared to be beneficial in preventing IUGR-induced inflammation, oxidative damage and injury by activating the expression of the NF-κB, JAK/STAT and Nfe2l2/ARE pathways in the liver.
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63
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Kang C, Shin WS, Yeo D, Lim W, Zhang T, Ji LL. Anti-inflammatory effect of avenanthramides via NF-κB pathways in C2C12 skeletal muscle cells. Free Radic Biol Med 2018; 117:30-36. [PMID: 29371164 DOI: 10.1016/j.freeradbiomed.2018.01.020] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 01/16/2018] [Accepted: 01/19/2018] [Indexed: 11/21/2022]
Abstract
Avenanthramides (Avns), the polyphenol compounds found only in oats, have been shown to exhibit anti-inflammatory effects mainly by inhibiting nuclear factor (NF)-κB activation in select cell lines. However, the molecular mechanism by which Avns regulate the NF-κB pathway is still unclear. The purpose of this study was to investigate (1) the molecular mechanism by which three main fractions of Avns (AvnA, AvnB and AvnC) interact with IκB Kinase β (IKKβ); and (2) whether this interaction results in reduced inflammatory responses in skeletal muscle cells. The protein-ligand docking and molecular dynamics simulation studies suggest that Avns acted as an allosteric inhibitor for modulating IKKβ's affinity for the NF-κB complex. Thus, Avns reduced IKKβ kinase activity in response to tert-butyl hydroperoxide (tBHP) stimulation and attenuated tBHP-induced TNFα and IL-1β mRNA expression. Furthermore, the three-fold increases in cyclooxygenase-2 (COX-2) protein and luciferase activity with tBHP treatment were reduced by 50% with Avns (P < .01), along with decreased prostaglandin E2 levels (P < .01). These data indicate that Avns are potent inhibitors of NFκB-mediated inflammatory response due to the downregulation of IKKβ activity in C2C12 cells.
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Affiliation(s)
- Chounghun Kang
- Department of Physical Education, Inha University, South Korea
| | - Woo Shik Shin
- David Geffen School of Medicine, University of California, Los Angeles, United States
| | - Dongwook Yeo
- Laboratory of Physiological Hygiene and Exercise Science, School of Kinesiology, University of Minnesota, MN 55455, United States
| | - Wonchung Lim
- Department of Sports Medicine, College of Health Science, Cheongju University, South Korea
| | - Tianou Zhang
- Laboratory of Physiological Hygiene and Exercise Science, School of Kinesiology, University of Minnesota, MN 55455, United States
| | - Li Li Ji
- Laboratory of Physiological Hygiene and Exercise Science, School of Kinesiology, University of Minnesota, MN 55455, United States.
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64
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Puccio I, Khan S, Butt A, Graham D, Sehgal V, Patel D, Novelli M, Lovat LB, Rodriguez-Justo M, Hamoudi RA. Immunohistochemical assessment of Survivin and Bcl3 expression as potential biomarkers for NF-κB activation in the Barrett metaplasia-dysplasia-adenocarcinoma sequence. Int J Exp Pathol 2018; 99:10-14. [PMID: 29473241 DOI: 10.1111/iep.12260] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2017] [Accepted: 12/12/2017] [Indexed: 12/20/2022] Open
Abstract
Non-dysplastic Barrett's oesophagus (NDBE) occurs as a consequence of an inflammatory response triggered through prolonged gastro-oesophageal reflux and it may precede the development of oesophageal adenocarcinoma. NF-κB activation as a result of the inflammatory response has been shown in NDBE, but the possible mechanism involved in the process is unknown. The aim of this study was to assess, using immunohistochemistry, Survivin and Bcl3 expression as potential biomarkers for NF-κB activation along the oesophageal metaplasia-dysplasia-adenocarcinoma sequence. Survivin is an NF-κB-inducible anti-apoptotic protein, and Bcl3 is a negative regulator of NF-κB. There was progressive upregulation of Survivin expression along the oesophageal metaplasia-dysplasia-adenocarcinoma sequence. Bcl3 expression was upregulated in non-dysplastic Barrett's oesophagus, low-grade, high-grade dysplasia and oesophageal adenocarcinoma when compared to squamous group. The study shows the differential expression of Bcl3 between the squamous and Barrett's stage, suggesting that Bcl3 could be a surrogate marker for early event involving constitutive NF-κB activation. In addition, the study suggests that NF-κB activation may infer resistance to apoptosis through the expression of anti-apoptotic genes such as Survivin, which showed progressive increase in expression throughout the oesophageal metaplasia-dysplasia-adenocarcinoma sequence. This ability to avoid apoptosis may underlie the persistence and malignant predisposition of Barrett's metaplasia.
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Affiliation(s)
- Ignazio Puccio
- Research Department of Tissue and Energy, Division of Surgery & Interventional Science, University College London, London, UK
| | - Saif Khan
- Research Department of Tissue and Energy, Division of Surgery & Interventional Science, University College London, London, UK
| | - Adil Butt
- Research Department of Tissue and Energy, Division of Surgery & Interventional Science, University College London, London, UK
| | - David Graham
- Research Department of Tissue and Energy, Division of Surgery & Interventional Science, University College London, London, UK
| | - Vinay Sehgal
- Research Department of Tissue and Energy, Division of Surgery & Interventional Science, University College London, London, UK
| | - Dominic Patel
- Research Department of Tissue and Energy, Division of Surgery & Interventional Science, University College London, London, UK
| | - Marco Novelli
- Research Department of Pathology, University College London, London, UK
| | - Laurence B Lovat
- Research Department of Tissue and Energy, Division of Surgery & Interventional Science, University College London, London, UK
| | | | - Rifat A Hamoudi
- Research Department of Tissue and Energy, Division of Surgery & Interventional Science, University College London, London, UK.,Sharjah Institute for Medical Research, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
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65
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Luo YQ, Wang D, Gong T, Zhu J. An updated meta-analysis of 37 case-control studies on the association between NFKB1 -94ins/del ATTG promoter polymorphism and cancer susceptibility. Oncotarget 2018; 7:58659-58670. [PMID: 27463002 PMCID: PMC5295460 DOI: 10.18632/oncotarget.10808] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2016] [Accepted: 07/10/2016] [Indexed: 02/05/2023] Open
Abstract
As a cell survival signal, nuclear factor-kappa B (NFKB) is associated with the pathogenesis of numerous malignancies. According to several studies, NFKB1 −94ins/del ATTG promoter polymorphism is associated with the risk of different malignancies, but the results were not consistent. Therefore, we performed an updated meta-analysis based on 37 case-control studies from 33 articles (16,271 cases and 22,781 controls) to clarify the relationship. The odds ratio (OR) and 95% confidence interval (CI) were used to determine the strength of the association. We found that the NFKB1 −94ins/del ATTG promoter polymorphism was significantly associated with increased susceptibility to cancer in the recessive (II vs. ID+DD, OR = 1.140, 95% CI = 1.029–1.263, p =0.012), homozygote (II vs. DD, OR = 1.259, 95% CI = 1.068–1.485, p =0.006), and allele (I vs. D, OR = 1.109, 95% CI = 1.025–1.199, p =0.010) genetic models. The subgroup analysis for ethnicity found that the NFKB1 −94ins/del ATTG promoter polymorphism was significantly associated with an increased susceptibility to cancer in Asians and with a decreased susceptibility in Caucasians. The stratified analyses revealed significant associations between the polymorphism and increased susceptibility to ovarian cancer, oral squamous cell carcinoma, and nasopharyngeal carcinoma.
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Affiliation(s)
- Yi-Qiao Luo
- Department of Thoracic Oncology, West China Hospital/West China School of Medicine, Sichuan University, Chengdu, China
| | - Duan Wang
- Department of Orthopaedics, West China School of Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Teng Gong
- Sichuan Mianyang 404 Hospital, Mianyang, China
| | - Jiang Zhu
- Department of Thoracic Oncology, West China Hospital, Sichuan University, Chengdu, China
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66
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Bird RP. The Emerging Role of Vitamin B6 in Inflammation and Carcinogenesis. ADVANCES IN FOOD AND NUTRITION RESEARCH 2018; 83:151-194. [PMID: 29477221 DOI: 10.1016/bs.afnr.2017.11.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Vitamin B6 serves as a coenzyme catalyzing more than 150 enzymes regulating metabolism and synthesis of proteins, carbohydrates, lipids, heme, and important bioactive metabolites. For several years vitamin B6 and its vitamers (B6) were recognized as antioxidant and antiinflammatory and in modulating immunity and gene expression. During the last 10 years, there were growing reports implicating B6 in inflammation and inflammation-related chronic illnesses including cancer. It is unclear if the deficiency of B6 or additional intake of B6, above the current requirement, should be the focus. Whether the current recommended daily intake for B6 is adequate should be revisited, since B6 is important to human health beyond its role as a coenzyme and its status is affected by many factors including but not limited to age, obesity, and inflammation associated with chronic illnesses. A link between inflammation B6 status and carcinogenesis is not yet completely understood. B6-mediated synthesis of H2S, a gasotransmitter, and taurine in health and disease, especially in maintaining mitochondrial integrity and biogenesis and inflammation, remains an important area to be explored. Recent developments in the molecular role of B6 and its direct interaction with inflammasomes, and nuclear receptor corepressor and coactivator, receptor-interacting protein 140, provide a strong impetus to further explore the multifaceted role of B6 in carcinogenesis and human health.
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Affiliation(s)
- Ranjana P Bird
- School of Health Sciences, University of Northern British Columbia, Prince George, BC, Canada.
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67
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Kim KY. Anti-inflammatory and ECM gene expression modulations of β-eudesmol via NF-κB signaling pathway in normal human dermal fibroblasts. BIOMEDICAL DERMATOLOGY 2018. [DOI: 10.1186/s41702-017-0014-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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68
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Prandi S, Voigt A, Meyerhof W, Behrens M. Expression profiling of Tas2r genes reveals a complex pattern along the mouse GI tract and the presence of Tas2r131 in a subset of intestinal Paneth cells. Cell Mol Life Sci 2018; 75:49-65. [PMID: 28801754 PMCID: PMC11105753 DOI: 10.1007/s00018-017-2621-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 08/02/2017] [Accepted: 08/04/2017] [Indexed: 12/18/2022]
Abstract
The chemical variability of the intestinal lumen requires the presence of molecular receptors detecting the various substances naturally occurring in the diet and as a result of the activity of the microbiota. Despite their early discovery, intestinal bitter taste receptors (Tas2r) have not yet been assigned an unambiguous physiological function. Recently, using a CRE-recombinant approach we showed that the Tas2r131 gene is expressed in a subset of mucin-producing goblet cells in the colon of mice. Moreover, we also demonstrated that the expression of the Tas2r131 locus is not restricted to this region. In the present study we aimed at characterizing the presence of positive cells also in other gastrointestinal regions. Our results show that Tas2r131+ cells appear in the jejunum and the ileum, and are absent from the stomach and the duodenum. We identified the positive cells as a subpopulation of deep-crypt Paneth cells in the ileum, strengthening the notion of a defensive role for Tas2rs in the gut. To get a broader perspective on the expression of bitter taste receptors in the alimentary canal, we quantified the expression of all 35 Tas2r genes along the gastrointestinal tract by qRT-PCR. We discovered that the number and expression level of Tas2r genes profoundly vary along the alimentary canal, with the stomach and the colon expressing the largest subsets.
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Affiliation(s)
- Simone Prandi
- Department of Molecular Genetics, German Institute for Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany
| | - Anja Voigt
- Department of Molecular Genetics, German Institute for Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany
| | - Wolfgang Meyerhof
- Department of Molecular Genetics, German Institute for Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany
| | - Maik Behrens
- Department of Molecular Genetics, German Institute for Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany.
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Sezginer EK, Yilmaz-Oral D, Lokman U, Nebioglu S, Aktan F, Gur S. Effects of varying degrees of partial bladder outlet obstruction on urinary bladder function of rats: A novel link to inflammation, oxidative stress and hypoxia. Low Urin Tract Symptoms 2017; 11:O193-O201. [PMID: 29282885 DOI: 10.1111/luts.12211] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Revised: 10/13/2017] [Accepted: 10/30/2017] [Indexed: 12/21/2022]
Abstract
OBJECTIVES The aim of the present study was to investigate the effects of different degrees of obstruction, and the roles of inflammation, oxidative stress, and hypoxia parameters on bladder function. METHODS Thirty male Sprague-Dawley rats were divided into 3 groups (n = 10 in each group): (i) sham-operated control; (ii) severe partial bladder outlet obstruction (PBOO); and (iii) moderate PBOO. Severe and moderate PBOO were induced by urethral ligation using 3-Fr and 4-Fr catheters, respectively, for 6 weeks. After 6 weeks, the in vitro contractile responses to carbachol, electrical field stimulation, ATP and KCl were measured in bladder strips. In addition, mRNA and protein expression of nuclear factor kappa B (NF-κB) hypoxia-inducible factor (HIF) and nuclear factor, erythroid 2-like 2 (Nrf2) in bladder were determined by real-time polymerase chain reaction and western blotting. Malondialdehyde (MDA) levels in bladder tissues were also determined. RESULTS Rats in the severe PBOO group had the highest bladder weight. Detrusor strips from rats in the severe PBOO group exhibited 61%-82% smaller contractile responses to all four stimuli than those from the sham-operated group. Activity of NF-κB as an inflammatory marker was increased in the severe PBOO group, whereas HIF-1α and HIF-2β protein levels were increased significantly in the moderate PBOO group. A master regulator of oxidative stress, Nrf2 expression was increased in all obstructed rats. MDA levels were higher in the severe PBOO group than in sham-operated group. CONCLUSION The results of the present study reveal the importance of oxidative stress-induced NF-κB signaling in bladder dysfunction with severe obstruction. Altered HIF signaling may contribute to the functional impairment after PBOO. Novel and evolving therapies targeting oxidative and/or inflammatory pathways may be a reasonable strategy for the management of lower urinary tract symptoms or benign prostatic hyperplasia.
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Affiliation(s)
- Ecem Kaya Sezginer
- Faculty of Pharmacy, Department of Biochemistry, Ankara University, Ankara, Turkey
| | - Didem Yilmaz-Oral
- Faculty of Pharmacy, Department of Biochemistry, Ankara University, Ankara, Turkey
| | - Utku Lokman
- Department of Urology, Ankara Occupational Diseases Hospital, Ankara, Turkey
| | - Serpil Nebioglu
- Faculty of Pharmacy, Department of Biochemistry, Ankara University, Ankara, Turkey
| | - Fugen Aktan
- Faculty of Pharmacy, Department of Biochemistry, Ankara University, Ankara, Turkey
| | - Serap Gur
- Faculty of Pharmacy, Department of Biochemistry, Ankara University, Ankara, Turkey
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70
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RETRACTED: LncRNA MALAT1 regulates sepsis-induced cardiac inflammation and dysfunction via interaction with miR-125b and p38 MAPK/NFκB. Int Immunopharmacol 2017; 55:69-76. [PMID: 29227823 DOI: 10.1016/j.intimp.2017.11.038] [Citation(s) in RCA: 135] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 11/18/2017] [Accepted: 11/27/2017] [Indexed: 12/31/2022]
Abstract
This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/our-business/policies/article-withdrawal).
This article has been retracted at the request of the Editor-in-Chief as there are concerns about the reliability of the results included in the article. The journal was initially contacted by the corresponding author to request the retraction of the article.
Given the comments of Dr Elisabeth Bik regarding this article “This paper belongs to a set of over 400 papers (as per February 2020) that share very similar Western blots with tadpole-like shaped bands, the same background pattern …”, the journal requested the author to provide the raw data. However, the author was not able to fulfil this request.
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71
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Giopanou I, Lilis I, Papadaki H, Papadas T, Stathopoulos GT. A link between RelB expression and tumor progression in laryngeal cancer. Oncotarget 2017; 8:114019-114030. [PMID: 29371965 PMCID: PMC5768382 DOI: 10.18632/oncotarget.23109] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 07/25/2017] [Indexed: 12/31/2022] Open
Abstract
Laryngeal cancer is a frequent malignancy originating from the squamous vocal epithelium in a multi-stage fashion in response to environmental carcinogens. Although most cases can be cured by surgery and/or radiotherapy, advanced and relapsing disease is common, and biomarkers of such dismal cases are urgently needed. The cancer genome of laryngeal cancers was recently shown to feature a signature of aberrant nuclear factor (NF)-κB activation, but this finding has not been clinically exploited. We analyzed primary tumor samples of 96 well-documented and longitudinally followed patients covering the whole spectrum of laryngeal neoplasia, including 21 patients with benign laryngeal diseases, 15 patients with dysplasia, 43 patients with early-stage carcinoma, and 17 patients with locally advanced carcinoma, for immunoreactivity of RelA, RelB, P50, and P52/P100, the main NF-κB subunits that activate transcription. Results were cross-examined with indices of tumor progression and survival. Interestingly, RelB expression increased with tumor stage, grade, and local extent. Moreover, patients displaying high RelB immunoreactivity exhibited statistically significantly poorer survival compared with patients featuring low levels of RelB expression (P = 0.018 by log-rank test). Using Cox regression analyses and tumor stage, local extent, grade and RelA/RelB immunoreactivity, we develop a new score that can independently predict survival of patients with laryngeal cancer. Hence we provide a simple and affordable NF-κB-based test to predict prognosis in laryngeal cancer.
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Affiliation(s)
- Ioanna Giopanou
- Laboratory for Molecular Respiratory Carcinogenesis, Department of Physiology, Faculty of Medicine, University of Patras, Rio, Achaia 26504, Greece
| | - Ioannis Lilis
- Laboratory for Molecular Respiratory Carcinogenesis, Department of Physiology, Faculty of Medicine, University of Patras, Rio, Achaia 26504, Greece
| | - Helen Papadaki
- Department of Anatomy, Faculty of Medicine, University of Patras, Rio, Achaia 26504, Greece
| | - Theodoros Papadas
- Department of Otorhinolaryngology & Head and Neck Surgery, Faculty of Medicine, University of Patras, Rio, Achaia 26504, Greece
| | - Georgios T Stathopoulos
- Laboratory for Molecular Respiratory Carcinogenesis, Department of Physiology, Faculty of Medicine, University of Patras, Rio, Achaia 26504, Greece.,Comprehensive Pneumology Center (CPC) and Institute for Lung Biology and Disease (iLBD), University Hospital, Ludwig-Maximilians University and Helmholtz ZentrumMünchen, Member of The German Center for Lung Research (DZL), Munich, Bavaria 81377, Germany
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72
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Nam SY, Kim KY, Kim MH, Jang JB, Rah SY, Lee JM, Kim HM, Jeong HJ. Anti-inflammatory effects of a traditional Korean medicine: Ojayeonjonghwan. PHARMACEUTICAL BIOLOGY 2017; 55:1856-1862. [PMID: 28614972 PMCID: PMC6130514 DOI: 10.1080/13880209.2017.1339282] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 02/17/2017] [Accepted: 06/01/2017] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To study the anti-inflammatory properties of OJ. CONTEXT Ojayeonjonghwan (OJ) is a traditional Korean prescription, which has been widely used for the treatment of prostatitis. However, no scientific study has been performed of the anti-inflammatory effects of OJ. MATERIALS AND METHODS Peritoneal macrophages were isolated 3-4 days after injecting a C57BL/6J mouse with thioglycollate. They were then treated with OJ water extract (0.01, 0.1, and 1 mg/mL) for 1 h and stimulated with lipopolysaccharide (LPS) for different times. Nitric oxide (NO), inducible nitric oxide synthase (iNOS) and cyclooxygenase (COX)-2, and proinflammatory cytokine levels were determined by NO assay, Western blotting, RT-PCR and ELISA. RESULTS NO generation and iNOS induction were increased in the LPS-activated mouse peritoneal macrophages. However, NO generation and iNOS induction by LPS were suppressed by treatment with OJ for the first time. The IC50 value of OJ with respect to NO production was 0.09 mg/mL. OJ did not influence LPS-stimulated COX-2 induction, but did significantly decrease LPS-stimulated secretions and mRNA expressions of tumour necrosis factor (TNF)-α, interleukin (IL)-6, and IL-1β. Inhibition rates of TNF-α, IL-6, and IL-1β at an OJ concentration of 1 mg/mL were 77%, 88%, and 50%, respectively. OJ also suppressed the LPS-induced nuclear translocation of NF-κB. High-performance liquid chromatography showed schizandrin and gomisin A are major components of OJ. CONCLUSIONS OJ reduces inflammatory response, and this probably explains its positive impact on the prostatitis associated inflammation.
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MESH Headings
- Animals
- Anti-Inflammatory Agents, Non-Steroidal/analysis
- Anti-Inflammatory Agents, Non-Steroidal/chemistry
- Anti-Inflammatory Agents, Non-Steroidal/pharmacology
- Cells, Cultured
- Cyclooctanes/analysis
- Cyclooctanes/pharmacology
- Cyclooxygenase 2/genetics
- Cyclooxygenase 2/metabolism
- Cytokines/genetics
- Cytokines/metabolism
- Dioxoles/analysis
- Dioxoles/pharmacology
- Ethnopharmacology
- Gene Expression Regulation/drug effects
- Lignans/analysis
- Lignans/pharmacology
- Lipopolysaccharides/toxicity
- Macrophage Activation/drug effects
- Macrophages, Peritoneal/cytology
- Macrophages, Peritoneal/drug effects
- Macrophages, Peritoneal/immunology
- Macrophages, Peritoneal/metabolism
- Male
- Medicine, Korean Traditional
- Mice, Inbred C57BL
- Nitric Oxide/metabolism
- Nitric Oxide Synthase Type II/chemistry
- Nitric Oxide Synthase Type II/genetics
- Nitric Oxide Synthase Type II/metabolism
- Plant Extracts/chemistry
- Plant Extracts/pharmacology
- Polycyclic Compounds/analysis
- Polycyclic Compounds/pharmacology
- Prostatitis/drug therapy
- Prostatitis/immunology
- Prostatitis/metabolism
- Prostatitis/pathology
- Thioglycolates
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Affiliation(s)
- Sun-Young Nam
- Department of Pharmacology, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Kyu-Yeob Kim
- Department of Pharmacology, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Mi Hye Kim
- Department of Food and Nutrition, Hoseo University, Asan, Chungnam, Republic of Korea
| | - Jae-Bum Jang
- Department of Pharmaceutical Engineering, Hoseo University, Asan, Chungnam, Republic of Korea
| | - So-Young Rah
- Department of Biochemistry, Chonbuk National University, Jeonju, Republic of Korea
| | - Jin-Man Lee
- Department of Food Science & Technology and Research Institute for Basic Science, Hoseo University, Asan, Chungnam,Republic of Korea
| | - Hyung-Min Kim
- Department of Pharmacology, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Hyun-Ja Jeong
- Department of Food Science & Technology and Research Institute for Basic Science, Hoseo University, Asan, Chungnam,Republic of Korea
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Zhang Y, Xiang D, Tang B, Zhang CY. Sensitive Detection of Transcription Factor in Nuclear Extracts by Target-Actuated Isothermal Amplification-Mediated Fluorescence Enhancement. Anal Chem 2017; 89:10439-10445. [DOI: 10.1021/acs.analchem.7b02451] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yan Zhang
- Collaborative Innovation Center of Functionalized
Probes for Chemical Imaging in Universities of Shandong, Key Laboratory
of Molecular and Nano Probes, Ministry of Education, Shandong Provincial
Key Laboratory of Clean Production of Fine Chemicals, College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China
| | - Dongxue Xiang
- Collaborative Innovation Center of Functionalized
Probes for Chemical Imaging in Universities of Shandong, Key Laboratory
of Molecular and Nano Probes, Ministry of Education, Shandong Provincial
Key Laboratory of Clean Production of Fine Chemicals, College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China
| | - Bo Tang
- Collaborative Innovation Center of Functionalized
Probes for Chemical Imaging in Universities of Shandong, Key Laboratory
of Molecular and Nano Probes, Ministry of Education, Shandong Provincial
Key Laboratory of Clean Production of Fine Chemicals, College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China
| | - Chun-yang Zhang
- Collaborative Innovation Center of Functionalized
Probes for Chemical Imaging in Universities of Shandong, Key Laboratory
of Molecular and Nano Probes, Ministry of Education, Shandong Provincial
Key Laboratory of Clean Production of Fine Chemicals, College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China
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Zahedipour F, Dalirfardouei R, Karimi G, Jamialahmadi K. Molecular mechanisms of anticancer effects of Glucosamine. Biomed Pharmacother 2017; 95:1051-1058. [PMID: 28922722 DOI: 10.1016/j.biopha.2017.08.122] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 08/09/2017] [Accepted: 08/29/2017] [Indexed: 12/19/2022] Open
Abstract
Glucosamine is an amino sugar that is produced naturally in human body. It is an essential carbohydrate component of many cellular glycoproteins, glycolipids, and glycosaminoglycans (GAGs). This popular over-the-counter supplement is also found in the exoskeleton of crustaceans. Glucosamine and its derivatives have a long history in medicine for inflammatory conditions specially to relieve arthritis. This dietary supplement has numerous biological and pharmacological properties, including anti-inflammatory, antioxidant, anti-aging, anti-fibrotic, neuroprotective and cardioprotective activities. Many studies have shown that glucosamine has anti-cancer activity through influence on biological pathways involved in cell death, apoptosis, cell proliferation, and angiogenesis. Accordingly, this comprehensive review summarizes anti-cancer molecular mechanisms of glucosamine in details.
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Affiliation(s)
- Fatemeh Zahedipour
- Cellular and Molecular Biology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Razieh Dalirfardouei
- Department of Medical Biotechnology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Gholamreza Karimi
- Pharmaceutical Research Center and School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Khadijeh Jamialahmadi
- Biotechnology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Medical Biotechnology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
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75
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Kandemir FM, Kucukler S, Caglayan C, Gur C, Batil AA, Gülçin İ. Therapeutic effects of silymarin and naringin on methotrexate-induced nephrotoxicity in rats: Biochemical evaluation of anti-inflammatory, antiapoptotic, and antiautophagic properties. J Food Biochem 2017. [DOI: 10.1111/jfbc.12398] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Fatih Mehmet Kandemir
- Department of Biochemistry; Faculty of Veterinary Medicine, Ataturk University; Erzurum Turkey
| | - Sefa Kucukler
- Department of Biochemistry; Faculty of Veterinary Medicine, Ataturk University; Erzurum Turkey
| | - Cuneyt Caglayan
- Department of Biochemistry, Faculty of Veterinary Medicine; Bingol University; Bingol Turkey
| | - Cihan Gur
- Department of Biochemistry; Faculty of Veterinary Medicine, Ataturk University; Erzurum Turkey
| | - Annour Adoum Batil
- Department of Biochemistry; Faculty of Veterinary Medicine, Ataturk University; Erzurum Turkey
| | - İlhami Gülçin
- Department of Chemistry, Science and Arts Faculty; Atatürk University; Erzurum Turkey
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76
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Tang ZH, Peng J, Ren Z, Yang J, Li TT, Li TH, Wang Z, Wei DH, Liu LS, Zheng XL, Jiang ZS. New role of PCSK9 in atherosclerotic inflammation promotion involving the TLR4/NF-κB pathway. Atherosclerosis 2017; 262:113-122. [DOI: 10.1016/j.atherosclerosis.2017.04.023] [Citation(s) in RCA: 109] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 04/13/2017] [Accepted: 04/28/2017] [Indexed: 01/13/2023]
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77
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An overview of structure-activity relationship studies of curcumin analogs as antioxidant and anti-inflammatory agents. Future Med Chem 2017; 9:605-626. [PMID: 28394628 DOI: 10.4155/fmc-2016-0223] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Curcumin, extracted mainly from Curcuma longa rhizomes, has been reported to possess potent anti-inflammatory and anti-oxidant activities. Although safe at higher doses and exhibiting multiple biological activities, curcumin still has the problem of poor bioavailability which has been an attractive area of research over the last few years. A number of efforts have been made by modifying structural features of curcumin. This review highlights the structurally modified and more stable newly synthesized curcumin analogs that have been screened against antioxidant and anti-inflammatory activities. Also the structure-activity relationship to gain insight into future guidelines for scheming new compounds has been discussed, and further these analogs being more stable may serve as promising agents for use in different pathological conditions.
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78
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Gao W, Tong D, Li Q, Huang P, Zhang F. Dexamethasone promotes regeneration of crushed inferior alveolar nerve by inhibiting NF-κB activation in adult rats. Arch Oral Biol 2017; 80:101-109. [PMID: 28412609 DOI: 10.1016/j.archoralbio.2017.03.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Revised: 02/20/2017] [Accepted: 03/08/2017] [Indexed: 01/02/2023]
Abstract
PURPOSE Nuclear factor kappa B (NF-κB), which is closely related to inflammation, has become a topic of interest for research. The aim of this study is to investigate the effects of dexamethasone (Dex), an inhibitor of NF-κB, on inferior alveolar nerve injury in adult rats. MATERIALS AND METHODS The crushed inferior alveolar model is established in Wistar rats and they are randomly divided into three groups according to treatment: pyrrolidine dithiocarbamate (PDTC), dexamethasone (Dex), and saline (physiological saline). After treatment, the rats are respectively sacrificed at 3, 7, and 14d, and inferior alveolar nerves are extracted for histochemical and western blot analysis. RESULT Compared with the PDTC and saline groups, nerve fibers in the Dex group are regularly arranged with few vacuoles, which is similar to normal inferior alveolar nerves. Immunofluorescent results show significantly decreased NF-κB expression in the Dex group. Western bolt shows higher expression of GAP-43 and lower expression of NF-κB. CONCLUSION Taken together, all results show that dexamethasone significantly improved the regeneration of crushed inferior alveolar nerves by inhibiting NF-κB activation in adult rats.
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Affiliation(s)
- Wei Gao
- Shandong Provincial Key Laboratory of Oral Tissue Regeneration, Department of Oral and Maxillofacial Surgery, School of Stomatology, Shandong University, Wenhua-West Road 44-1, Jinan, Shandong, China.
| | - Dongdong Tong
- Shandong Provincial Key Laboratory of Oral Tissue Regeneration, Department of Oral and Maxillofacial Surgery, School of Stomatology, Shandong University, Wenhua-West Road 44-1, Jinan, Shandong, China.
| | - Qing Li
- Shandong Provincial Key Laboratory of Oral Tissue Regeneration, Department of Oral and Maxillofacial Surgery, School of Stomatology, Shandong University, Wenhua-West Road 44-1, Jinan, Shandong, China.
| | - Ping Huang
- QILU Hospital of Shandong University, Wenhua-West Road 44-2, Jinan, Shandong, China.
| | - Fenghe Zhang
- Shandong Provincial Key Laboratory of Oral Tissue Regeneration, Department of Oral and Maxillofacial Surgery, School of Stomatology, Shandong University, Wenhua-West Road 44-1, Jinan, Shandong, China.
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79
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Zhu D, Wang L, Xu X, Jiang W. Colocalization recognition-activated cascade signal amplification strategy for ultrasensitive detection of transcription factors. Biosens Bioelectron 2017; 89:978-983. [DOI: 10.1016/j.bios.2016.09.073] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Revised: 09/15/2016] [Accepted: 09/21/2016] [Indexed: 01/10/2023]
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80
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Targeting the NF-E2-Related Factor 2 Pathway: a Novel Strategy for Traumatic Brain Injury. Mol Neurobiol 2017; 55:1773-1785. [PMID: 28224478 DOI: 10.1007/s12035-017-0456-z] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Accepted: 02/13/2017] [Indexed: 12/30/2022]
Abstract
As an essential component of cellular defense against a variety of endogenous and exogenous stresses, nuclear factor erythroid 2-related factor 2 (Nrf2) has received increased attention in the past decades. Multiple studies indicate that Nrf2 acts not only as an important protective factor in injury models but also as a downstream target of therapeutic agents. Activation of Nrf2 has increasingly been linked to many human diseases, especially in central nervous system (CNS) injury such as traumatic brain injury (TBI). Several researches have deciphered that activation of Nrf2 exerts antioxidative stress, antiapoptosis, and antiinflammation influence in TBI via different molecules and pathways including heme oxygenase-1 (HO-1), NADPH:quinine oxidoreductase-1 (NQO-1), nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB), and nicotinamide adenine dinucleotide phosphate oxidase 2 (NOX2). Hence, Nrf2 shows great promise as a molecular target in TBI. In the present article, we provide an updated review of the current state of our knowledge about relationship between Nrf2 and TBI, highlighting the specific roles of Nrf2 in TBI.
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81
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Fu W, Zhuo ZJ, Chen YC, Zhu J, Zhao Z, Jia W, Hu JH, Fu K, Zhu SB, He J, Liu GC. NFKB1 -94insertion/deletion ATTG polymorphism and cancer risk: Evidence from 50 case-control studies. Oncotarget 2017; 8:9806-9822. [PMID: 28039461 PMCID: PMC5354772 DOI: 10.18632/oncotarget.14190] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Accepted: 11/22/2016] [Indexed: 02/07/2023] Open
Abstract
Nuclear factor-kappa B1 (NF-κB1) is a pleiotropic transcription factor and key contributor to tumorigenesis in many types of cancer. Numerous studies have addressed the association of a functional insertion (I)/deletion (D) polymorphism (-94ins/delATTG, rs28362491) in the promoter region of NFKB1 gene with the risk of various types of cancer; however, their conclusions have been inconsistent. We therefore conducted a meta-analysis to reevaluate this association. PubMed, EMBASE, China National Knowledge infrastructure (CNKI), and WANFANG databases were searched through July 2016 to retrieve relevant studies. After careful assessment, 50 case-control studies, comprising 18,299 cases and 23,484 controls were selected. Crude odds ratios (ORs) and 95% confidence intervals (CIs) were used to determine the strength of the association. The NFKB1 -94ins/delATTG polymorphism was associated with a decreased risk of overall cancer in the homozygote model (DD vs. II): OR = 0.75, 95% CI = 0.64-0.87); heterozygote model (ID vs. II): OR = 0.91, 95% CI = 0.83-0.99; recessive model (DD vs. ID/II): OR = 0.81, 95% CI = 0.71-0.91; dominant model (ID/DD vs. II): OR = 0.86, 95% CI = 0.78-0.95; and allele contrast model (D vs. I): OR = 0.88, 95% CI = 0.81-0.95). Subgroup and stratified analyses revealed decreased risks for lung cancer, nasopharyngeal carcinoma, prostate cancer, ovarian cancer, and oral squamous cell carcinoma, and this association held true also for Asians (especially Chinese subjects) in hospital-based studies, and in studies with quality scores less than nine. Well-designed, large-scale case-control studies are needed to confirm these results.
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Affiliation(s)
- Wen Fu
- Department of Pediatric Urology, Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, Guangdong, China
| | - Zhen-Jian Zhuo
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong 999077, China
| | - Yung-Chang Chen
- Department of Gastroenterology, The First People's Hospital of Foshan (Affiliated Foshan Hospital of Sun Yat-sen University), Foshan 528000, Guangdong, China
| | - Jinhong Zhu
- Molecular Epidemiology Laboratory and Department of Laboratory Medicine, Harbin Medical University Cancer Hospital, Harbin 150040, Heilongjiang, China
| | - Zhang Zhao
- Department of Pediatric Urology, Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, Guangdong, China
| | - Wei Jia
- Department of Pediatric Urology, Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, Guangdong, China
| | - Jin-Hua Hu
- Department of Pediatric Urology, Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, Guangdong, China
| | - Kai Fu
- Department of Pediatric Urology, Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, Guangdong, China
| | - Shi-Bo Zhu
- Department of Pediatric Urology, Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, Guangdong, China
| | - Jing He
- Department of Pediatric Urology, Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, Guangdong, China
| | - Guo-Chang Liu
- Department of Pediatric Urology, Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, Guangdong, China
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Wu YP, Cao C, Wu YF, Li M, Lai TW, Zhu C, Wang Y, Ying SM, Chen ZH, Shen HH, Li W. Activating transcription factor 3 represses cigarette smoke-induced IL6 and IL8 expression via suppressing NF-κB activation. Toxicol Lett 2017; 270:17-24. [PMID: 28185985 DOI: 10.1016/j.toxlet.2017.02.002] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2016] [Revised: 01/27/2017] [Accepted: 02/05/2017] [Indexed: 01/31/2023]
Abstract
Airway and lung inflammation is a fundamental hallmark of chronic obstructive pulmonary disease (COPD). Activating transcription factor 3 (ATF3) has been reported to negatively regulate many pro-inflammatory cytokines and chemokines. However, little is known about the impact of ATF3 on the inflammatory response of COPD. Since cigarette smoke (CS) is considered to be the most important risk factor in the etiology of COPD, we attempted to investigate the effects and molecular mechanisms of ATF3 in CS-induced inflammation. We observed an increase in the expression of ATF3 in the lung tissues of CS-exposed mice and CS extract (CSE)-treated human bronchial epithelial (HBE) cells. In vitro results indicated that ATF3 inhibition significantly increased the expression of proinflammatory cytokines interleukin 6 (IL6) and interleukin 8 (IL8) in CSE-stimulated HBE cells. Furthermore, in vivo data verified that CS induced inflammatory cell recruitment around the bronchus. In addition, neutrophil infiltration in bronchoalveolar lavage fluid (BALF) of CS-exposed Atf3-/- mice was markedly higher than in stimulated WT mice. Finally, ATF3 deficiency increased the in vitro and in vivo expression and phosphorylation of nuclear factor-κB (NF-κB), a positive mediator of inflammation. Thus, this study shows that ATF3 plays an important role in the negative regulation of CS-induced pro-inflammatory gene expression through downregulating NF-κB phosphorylation.
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Affiliation(s)
- Yan-Ping Wu
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Chao Cao
- Department of Respiratory Medicine, Ningbo First Hospital, Ningbo, China
| | - Yin-Fang Wu
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Miao Li
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Tian-Wen Lai
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Chen Zhu
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Yong Wang
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Song-Min Ying
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Zhi-Hua Chen
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Hua-Hao Shen
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China; State Key Lab of Respiratory Disease, Key site of National Clinical Research Center for Respiratory Disease, Guangzhou, China.
| | - Wen Li
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China.
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Oliveira-Paula GH, Lacchini R, Tanus-Santos JE. Clinical and pharmacogenetic impact of endothelial nitric oxide synthase polymorphisms on cardiovascular diseases. Nitric Oxide 2017; 63:39-51. [DOI: 10.1016/j.niox.2016.08.004] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Revised: 08/10/2016] [Accepted: 08/24/2016] [Indexed: 12/30/2022]
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84
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Jang J, Jung Y, Chae S, Chung SI, Kim SM, Yoon Y. WNT/β-catenin pathway modulates the TNF-α-induced inflammatory response in bronchial epithelial cells. Biochem Biophys Res Commun 2017; 484:442-449. [PMID: 28137581 DOI: 10.1016/j.bbrc.2017.01.156] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Accepted: 01/27/2017] [Indexed: 11/30/2022]
Abstract
In this study, TNF-α was found to activate the WNT/β-catenin pathway in BEAS-2B human bronchial epithelial cells. Levels of phospho-LRP6, Dvl-2, and phospho-GSK-3β were elevated, while that of Axin was reduced by TNF-α treatment. Nuclear translocation of β-catenin and the reporter activity of a β-catenin-responsive promoter were increased by TNF-α treatment. Under the same experimental conditions, TNF-α activated the NF-κB signaling, which includes the phosphorylation and degradation of IκB and nuclear translocation and target DNA binding of NF-κB, and it was found that an inhibitor of NF-κB activation, JSH-23, inhibited TNF-α-induced Wnt signaling as well as NF-κB signaling. It was also found that recombinant Wnt proteins induced NF-κB nuclear translocations and its target DNA binding, suggesting that Wnt signaling and NF-κB signaling were inter-connected. TNF-α-induced modulations of IκB and NF-κB as well as pro-inflammatory cytokine expression were significantly suppressed by the transfection of β-catenin siRNA compared to that of control siRNA. Transfection of a β-catenin expression plasmid augmented the TNF-α-induced modulations of IκB and NF-κB as well as pro-inflammatory cytokine expression. These results clearly demonstrated that the WNT/β-catenin pathway modulates the inflammatory response induced by TNF-α, suggesting that this pathway may be a useful target for the effective treatment of bronchial inflammation.
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Affiliation(s)
- Jaewoong Jang
- Department of Microbiology, Chung-Ang University, College of Medicine, Seoul 156-756, Republic of Korea
| | - Yoonju Jung
- Department of Microbiology, Chung-Ang University, College of Medicine, Seoul 156-756, Republic of Korea
| | - Seyeon Chae
- Department of Microbiology, Chung-Ang University, College of Medicine, Seoul 156-756, Republic of Korea
| | - Sang-In Chung
- Department of Microbiology, Chung-Ang University, College of Medicine, Seoul 156-756, Republic of Korea
| | - Seok-Min Kim
- School of Mechanical Engineering, Chung-Ang University, Seoul 156-756, Republic of Korea
| | - Yoosik Yoon
- Department of Microbiology, Chung-Ang University, College of Medicine, Seoul 156-756, Republic of Korea.
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85
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Li W, Wang X, Niu X, Zhang H, He Z, Wang Y, Zhi W, Liu F. Protective Effects of Nobiletin Against Endotoxic Shock in Mice Through Inhibiting TNF-α, IL-6, and HMGB1 and Regulating NF-κB Pathway. Inflammation 2017; 39:786-97. [PMID: 26846885 DOI: 10.1007/s10753-016-0307-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Nobiletin (NOB), the major bioactive component of polymethoxyflavones in citrus fruits, has been reported possessing significant biological properties. The purpose of the present study was to investigate the protective role of NOB on lipopolysaccharide (LPS)-induced endotoxic shock in mice. We found pretreatment with NOB increases the survival rate of mice after endotoxin injection. The present study clearly demonstrates that pretreatment with NOB decreases the production of early pro-inflammatory cytokines TNF-α, IL-6, and late-phase mediator HMGB1 in serum and tissues of kidney, lung, and liver. The histopathological study indicates that NOB administration significantly attenuate tissues injury induced by LPS. Moreover, NOB suppresses the activity of nuclear factor-kappa B (NF-κB). These results suggest that NOB protects mice against LPS-induced endotoxic shock through inhibiting the production of TNF-α, IL-6, and HMGB1 and the activation of NF-κB, which elucidate that NOB may be a promising drug candidate for the treatment of septic shock.
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Affiliation(s)
- Weifeng Li
- School of Pharmacy, Xi'an Jiaotong University, No. 76 Western Yanta Road, Xi'an City, Shaanxi Province, 710061, People's Republic of China
| | - Xiumei Wang
- School of Pharmacy, Xi'an Jiaotong University, No. 76 Western Yanta Road, Xi'an City, Shaanxi Province, 710061, People's Republic of China
| | - Xiaofeng Niu
- School of Pharmacy, Xi'an Jiaotong University, No. 76 Western Yanta Road, Xi'an City, Shaanxi Province, 710061, People's Republic of China.
| | - Hailin Zhang
- School of Pharmacy, Xi'an Jiaotong University, No. 76 Western Yanta Road, Xi'an City, Shaanxi Province, 710061, People's Republic of China
| | - Zehong He
- School of Pharmacy, Xi'an Jiaotong University, No. 76 Western Yanta Road, Xi'an City, Shaanxi Province, 710061, People's Republic of China
| | - Yu Wang
- School of Pharmacy, Xi'an Jiaotong University, No. 76 Western Yanta Road, Xi'an City, Shaanxi Province, 710061, People's Republic of China
| | - Wenbing Zhi
- School of Pharmacy, Xi'an Jiaotong University, No. 76 Western Yanta Road, Xi'an City, Shaanxi Province, 710061, People's Republic of China
| | - Fang Liu
- School of Pharmacy, Xi'an Jiaotong University, No. 76 Western Yanta Road, Xi'an City, Shaanxi Province, 710061, People's Republic of China
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AI K, WU JF, QI F, ZHANG H, YI XQ, LING X. Effect of electroacupuncture at “Zúsānlľ” ( ST 36) and other lower he-sea points on the expression of TNF-α and NF-κB of acute gastric mucosal lesion rats. WORLD JOURNAL OF ACUPUNCTURE-MOXIBUSTION 2016. [DOI: 10.1016/s1003-5257(17)30019-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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87
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Wang R, Pi J, Su X, Liu J, Zeng X, Wong I, Huang L, Zhou H, Cai J, Li T, Liu L. Dihydromyricetin suppresses inflammatory responses in vitro and in vivo through inhibition of IKKβ activity in macrophages. SCANNING 2016; 38:901-912. [PMID: 27487564 DOI: 10.1002/sca.21339] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Accepted: 06/27/2016] [Indexed: 06/06/2023]
Abstract
Dihydromyricetin (DMY) a flavonoid derived from medicinal plant Ampelopsis grossedentata, possesses anti-oxidative and anti-inflammatory effects in vitro, however, the in vivo anti-inflammatory action of DMY remains unknown. In the current study, carrageenan-induced paw edema in rat, an acute inflammation model, and RAW264.7 macrophages activated by LPS were employed to evaluate the anti-inflammatory potency of DMY in vivo and in vitro. Results showed that DMY significantly attenuated rat paw edema induced by carrageenan. Also, DMY markedly inhibited NO secretion, iNOS, and COX-2 protein expression, as well as p65 phosphorylation via suppression of IKKβ activity and IKKα/β phosphorylation in RAW264.7 cells. And using high resolution Atomic Force Microscope (AFM), we also proved that DMY prevented morphological change and membrane alterations of RAW 264.7 macrophages caused by LPS stimulation. As activation of macrophages is one of major factors in carrageenan-induced paw edema of rats, the anti-inflammatory action of DMY is suggested to be closely associated with suppression of macrophage activation. These findings indicate that DMY is valuable of being further investigated as a candidate new agent for treating inflammatory conditions, and suggest that AFM could be a powerful nanotool for anti-inflammatory investigations. SCANNING 38:901-912, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Rui Wang
- State Key Laboratory of Quality Research in Chinese Medicine/Macau Institute for Applied Research in Medicine and Health, Macau University of Science and Technology, Macau, China
| | - Jiang Pi
- State Key Laboratory of Quality Research in Chinese Medicine/Macau Institute for Applied Research in Medicine and Health, Macau University of Science and Technology, Macau, China
| | - Xiaohui Su
- State Key Laboratory of Quality Research in Chinese Medicine/Macau Institute for Applied Research in Medicine and Health, Macau University of Science and Technology, Macau, China
| | - Juan Liu
- State Key Laboratory of Quality Research in Chinese Medicine/Macau Institute for Applied Research in Medicine and Health, Macau University of Science and Technology, Macau, China
| | - Xing Zeng
- Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, China
| | - Ivan Wong
- Shum Yiu Foon Shum Bik Chuen Memorial Centre for Cancer and Inflammation, Hong Kong Baptist University, Hong Kong, China
| | - Lufen Huang
- State Key Laboratory of Quality Research in Chinese Medicine/Macau Institute for Applied Research in Medicine and Health, Macau University of Science and Technology, Macau, China
| | - Hua Zhou
- State Key Laboratory of Quality Research in Chinese Medicine/Macau Institute for Applied Research in Medicine and Health, Macau University of Science and Technology, Macau, China
| | - Jiye Cai
- State Key Laboratory of Quality Research in Chinese Medicine/Macau Institute for Applied Research in Medicine and Health, Macau University of Science and Technology, Macau, China
- Department of Chemistry, Jinan University, Guangzhou, China
| | - Ting Li
- State Key Laboratory of Quality Research in Chinese Medicine/Macau Institute for Applied Research in Medicine and Health, Macau University of Science and Technology, Macau, China
| | - Liang Liu
- State Key Laboratory of Quality Research in Chinese Medicine/Macau Institute for Applied Research in Medicine and Health, Macau University of Science and Technology, Macau, China
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Chen SC, Chen PY, Wu YL, Chen CW, Chen HW, Lii CK, Sun HL, Liu KL. Long-chain polyunsaturated fatty acids amend palmitate-induced inflammation and insulin resistance in mouse C2C12 myotubes. Food Funct 2016; 7:270-8. [PMID: 26436985 DOI: 10.1039/c5fo00704f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Intramuscular lipid accumulation results in inflammation, which is correlated with impaired insulin action in the skeletal muscle, an important organ for glucose uptake in the body. In this study, we explored the effects of docosahexaenoic acid (DHA), eicosapentaenoic acid (EPA), arachidonic acid (AA), and long-chain polyunsaturated fatty acids (PUFAs) on palmitic acid (PA)-induced inflammatory responses and insulin resistance in C2C12 myotubes. The mRNA expression of the pro-inflammatory cytokines interleukin-6 and tumor necrosis factor-α in PA-treated myotubes was suppressed by these three test long-chain PUFAs. Moreover, the addition of long-chain PUFAs decreased PA-induced insulin resistance as evidenced by increases in phosphorylated AKT and glucose uptake. In PA-treated myotubes, long-chain PUFAs improved glucose transporter 4 expression, basal glucose uptake without insulin, and the AMP-activated protein kinase pathway. Of note, the long-chain PUFAs obstructed the effects of PA on the activation of extracellular-signal-regulated kinase and protein kinase C-θ as well as nuclear factor-κB (NF-κB) and activator protein-1. The inhibitory effect of AA but not of DHA and EPA on PA-induced inflammation and impaired insulin action was cancelled in C2C12 myotubes transfected with a constitutively active mutant IκB kinase-β plasmid. These data suggest that long-chain PUFAs may be useful in the management of PA-induced inflammation and insulin resistance in myotubes. In addition to the NF-κB pathway, other mechanisms are involved in the health benefits of DHA and EPA in PA-treated myotubes.
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Affiliation(s)
- Shiuan-Chih Chen
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan. and Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Pei-Yin Chen
- Department of Nutrition, Chung Shan Medical University, No. 110, Sec. 1, Chien-Kuo N. Rd., Taichung 40203, Taiwan.
| | - Yu-Ling Wu
- Department of Nutrition, Chung Shan Medical University, No. 110, Sec. 1, Chien-Kuo N. Rd., Taichung 40203, Taiwan.
| | - Ching-Wen Chen
- Department of Nutrition, Chung Shan Medical University, No. 110, Sec. 1, Chien-Kuo N. Rd., Taichung 40203, Taiwan.
| | - Haw-Wen Chen
- Department of Nutrition, China Medical University, Taichung, Taiwan
| | - Chong-Kuei Lii
- Department of Nutrition, China Medical University, Taichung, Taiwan and Department of Health and Nutrition Biotechnology, Asia University, Taichung, Taiwan
| | - Hai-Lun Sun
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan. and Division of Allergy, Asthma and Rheumatology, Department of Pediatrics, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Kai-Li Liu
- Department of Nutrition, Chung Shan Medical University, No. 110, Sec. 1, Chien-Kuo N. Rd., Taichung 40203, Taiwan. and Department of Dietitian and Chung Shan Medical University Hospital, Taichung, Taiwan
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89
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Halligan DN, Murphy SJE, Taylor CT. The hypoxia-inducible factor (HIF) couples immunity with metabolism. Semin Immunol 2016; 28:469-477. [PMID: 27717536 DOI: 10.1016/j.smim.2016.09.004] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Revised: 09/23/2016] [Accepted: 09/30/2016] [Indexed: 12/16/2022]
Abstract
Crosstalk between metabolic and immune pathways has recently become appreciated to be key to the regulation of host defence. The hypoxia-inducible factor (HIF) is a transcription factor which was initially described as a ubiquitous master regulator of the transcriptional response to hypoxia. In this role, HIF regulates genes promoting adaptation to hypoxia including a number which influence the cellular metabolic strategy of a cell. It has more recently been appreciated that the regulation of HIF is not restricted to oxygen-dependent pathways, and is now known to be mediated by a number of additional metabolic and immune cues including metabolites and cytokines respectively. Furthermore, our understanding of the functional role of HIF has expanded to it now being appreciated as a major regulator of host immunity. This places HIF in an ideal position to act as a regulatory hub which links metabolic activity with immunity. In this review we synthesise recent data which identifies HIF as both a target and effector for metabolic and immune processes. Developing our understanding of the role of HIF in this context will uncover new therapeutic targets for inflammatory and infectious disease.
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Affiliation(s)
- Doug N Halligan
- Conway Institute, Charles Institute & Systems Biology Ireland, University College Dublin, Belfield Dublin 4, Ireland; Sigmoid Pharma, Invent Centre, Dublin City University, Dublin 9, Ireland
| | - Stephen J E Murphy
- Conway Institute, Charles Institute & Systems Biology Ireland, University College Dublin, Belfield Dublin 4, Ireland
| | - Cormac T Taylor
- Conway Institute, Charles Institute & Systems Biology Ireland, University College Dublin, Belfield Dublin 4, Ireland; IRCAN, Centre A. Lacassagne, University of Nice-Sophia Antipolis, 33 Avenue Valombrose, 06107 Nice, France; Centre Scientifique de Monaco (CSM), 8, Quai Antoine Premier, Monaco.
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90
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Pathway Analysis Incorporating Protein-Protein Interaction Networks Identified Candidate Pathways for the Seven Common Diseases. PLoS One 2016; 11:e0162910. [PMID: 27622767 PMCID: PMC5021324 DOI: 10.1371/journal.pone.0162910] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Accepted: 08/30/2016] [Indexed: 01/08/2023] Open
Abstract
Pathway analysis has become popular as a secondary analysis strategy for genome-wide association studies (GWAS). Most of the current pathway analysis methods aggregate signals from the main effects of single nucleotide polymorphisms (SNPs) in genes within a pathway without considering the effects of gene-gene interactions. However, gene-gene interactions can also have critical effects on complex diseases. Protein-protein interaction (PPI) networks have been used to define gene pairs for the gene-gene interaction tests. Incorporating the PPI information to define gene pairs for interaction tests within pathways can increase the power for pathway-based association tests. We propose a pathway association test, which aggregates the interaction signals in PPI networks within a pathway, for GWAS with case-control samples. Gene size is properly considered in the test so that genes do not contribute more to the test statistic simply due to their size. Simulation studies were performed to verify that the method is a valid test and can have more power than other pathway association tests in the presence of gene-gene interactions within a pathway under different scenarios. We applied the test to the Wellcome Trust Case Control Consortium GWAS datasets for seven common diseases. The most significant pathway is the chaperones modulate interferon signaling pathway for Crohn’s disease (p-value = 0.0003). The pathway modulates interferon gamma, which induces the JAK/STAT pathway that is involved in Crohn’s disease. Several other pathways that have functional implications for the seven diseases were also identified. The proposed test based on gene-gene interaction signals in PPI networks can be used as a complementary tool to the current existing pathway analysis methods focusing on main effects of genes. An efficient software implementing the method is freely available at http://puppi.sourceforge.net.
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91
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El-Dessouki AM, Galal MA, Awad AS, Zaki HF. Neuroprotective Effects of Simvastatin and Cilostazol in L-Methionine-Induced Vascular Dementia in Rats. Mol Neurobiol 2016; 54:5074-5084. [PMID: 27544235 DOI: 10.1007/s12035-016-0051-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Accepted: 08/09/2016] [Indexed: 02/07/2023]
Abstract
Vascular dementia (VaD) is a degenerative cerebrovascular disorder that leads to progressive decline in cognitive abilities and memory. Several reports demonstrated that oxidative stress and endothelial dysfunction are principal pathogenic factors in VaD. The present study was constructed to determine the possible neuroprotective effects of simvastatin in comparison with cilostazol in VaD induced by L-methionine in rats. Male Wistar rats were divided into four groups. Group I (control group), group II received L-methionine (1.7 g/kg, p.o.) for 32 days. The remaining two groups received simvastatin (50 mg/kg, p.o.) and cilostazol (100 mg/kg, p.o.), respectively, for 32 days after induction of VaD by L-methionine. Subsequently, rats were tested for cognitive performance using Morris water maze test then sacrificed for biochemical and histopathological assays. L-methionine induced VaD reflected by alterations in rats' behavior as well as the estimated neurotransmitters, acetylcholinesterase activity as well as increased brain oxidative stress and inflammation parallel to histopathological changes in brain tissue. Treatment of rats with simvastatin ameliorated L-methionine-induced behavioral, neurochemical, and histological changes in a manner comparable to cilostazol. Simvastatin may be regarded as a potential therapeutic strategy for the treatment of VaD. To the best of our knowledge, this is the first study to reveal the neuroprotective effects of simvastatin or cilostazol in L-methionine-induced VaD. Graphical Abstract ᅟ.
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Affiliation(s)
- Ahmed M El-Dessouki
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Ahram Canadian University, 6-October, 4th Industrial Area, Giza, 12566, Egypt.
| | - Mai A Galal
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt
| | - Azza S Awad
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Ahram Canadian University, 6-October, 4th Industrial Area, Giza, 12566, Egypt.
| | - Hala F Zaki
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt
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92
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Chae HS, Yoo H, Kim YM, Choi YH, Lee CH, Chin YW. Anti-Inflammatory Effects of 6,8-Diprenyl-7,4'-dihydroxyflavanone from Sophora tonkinensis on Lipopolysaccharide-Stimulated RAW 264.7 Cells. Molecules 2016; 21:molecules21081049. [PMID: 27529198 PMCID: PMC6274169 DOI: 10.3390/molecules21081049] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 08/05/2016] [Accepted: 08/08/2016] [Indexed: 12/31/2022] Open
Abstract
The anti-inflammatory effects and molecular mechanism of 6,8-diprenyl-7,4′-dihydroxyflavanone (DDF), one of the flavanones found in Sophora tonkinensis, were assessed in vitro through macrophage-mediated inflammation in the present study. The anti-inflammatory effects of DDF were not previously reported. DDF inhibited the production of nitric oxide and the expression of tumor necrosis factor α, interleukin-1β, and interleukin-6. Furthermore, the activation of nuclear factor-κB (NF-κB) and extracellular signal-regulated kinases (ERKs) in lipopolysaccharide-stimulated macrophages was suppressed by treatment with DDF. Therefore, DDF demonstrated potentially anti-inflammatory effects via the blockade of NF-κB and ERK activation in macrophages.
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Affiliation(s)
- Hee-Sung Chae
- College of Pharmacy and Integrated Research Institute for Drug Development, Dongguk University-Seoul, 32 Dongguk-lo, Ilsandong-gu, Goyang-si, Gyeonggi-do 410-820, Korea.
| | - Hunseung Yoo
- New Drug Preclinical & Analytical Team, Life Science R & D Center, SK Chemicals, 310 Pangyo-ro 463-400, Korea.
| | - Young-Mi Kim
- College of Pharmacy and Integrated Research Institute for Drug Development, Dongguk University-Seoul, 32 Dongguk-lo, Ilsandong-gu, Goyang-si, Gyeonggi-do 410-820, Korea.
| | - Young Hee Choi
- College of Pharmacy and Integrated Research Institute for Drug Development, Dongguk University-Seoul, 32 Dongguk-lo, Ilsandong-gu, Goyang-si, Gyeonggi-do 410-820, Korea.
| | - Chang Hoon Lee
- College of Pharmacy and Integrated Research Institute for Drug Development, Dongguk University-Seoul, 32 Dongguk-lo, Ilsandong-gu, Goyang-si, Gyeonggi-do 410-820, Korea.
| | - Young-Won Chin
- College of Pharmacy and Integrated Research Institute for Drug Development, Dongguk University-Seoul, 32 Dongguk-lo, Ilsandong-gu, Goyang-si, Gyeonggi-do 410-820, Korea.
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Alsagaby SA, Brennan P, Pepper C. Key Molecular Drivers of Chronic Lymphocytic Leukemia. CLINICAL LYMPHOMA MYELOMA & LEUKEMIA 2016; 16:593-606. [PMID: 27601002 DOI: 10.1016/j.clml.2016.08.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 06/29/2016] [Accepted: 08/02/2016] [Indexed: 01/01/2023]
Abstract
Chronic lymphocytic leukemia (CLL) is an adult neoplastic disease of B cells characterized by variable clinical outcomes. Although some patients have an aggressive form of the disease and often encounter treatment failure and short survival, others have more stable disease with long-term survival and little or no need for theraphy. In the past decade, significant advances have been made in our understanding of the molecular drivers that affect the natural pathology of CLL. The present review describes what is known about these key molecules in the context of their role in tumor pathogenicity, prognosis, and therapy.
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Affiliation(s)
- Suliman A Alsagaby
- Department of Medical Laboratory, College of Science, Majmaah University, Al-Zuli, Kingdom of Saudi Arabia; Institute of Cancer and Genetics, School of Medicine, Cardiff University, Cardiff, United Kingdom.
| | - Paul Brennan
- Institute of Cancer and Genetics, School of Medicine, Cardiff University, Cardiff, United Kingdom
| | - Chris Pepper
- Institute of Cancer and Genetics, School of Medicine, Cardiff University, Cardiff, United Kingdom
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94
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Wang SX, Wang J, Shao JB, Tang WN, Zhong JQ. Plumbagin Mediates Cardioprotection Against Myocardial Ischemia/Reperfusion Injury Through Nrf-2 Signaling. Med Sci Monit 2016; 22:1250-7. [PMID: 27078001 PMCID: PMC4835155 DOI: 10.12659/msm.897618] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Background Plumbagin is a potent antioxidant with anti-inflammatory and anti-carcinogenic action. Myocardial ischemia/reperfusion injury results in organ damage through oxidative stress and inflammatory mechanisms. In this study, we analyzed the potential role of plumbagin against myocardial I/R injury in Wistar rats. Material/Methods Oxidative stress was measured through ROS, lipid peroxide content, and antioxidant enzyme activities. The expression of redox signaling and inflammatory proteins was analyzed through Western blotting. Inflammatory cytokine expressions were determined through ELISA. Results Oxidative stress status was reduced by plumbagin by decreasing ROS and lipid peroxide levels in rats with myocardial I/R (MI/R) injury. Plumbagin regulated redox imbalance induced by I/R injury by modulating the transcription factors NF-κB and Nrf-2. Further, downstream targets of NF-κB (COX-2, iNOS) and Nrf-2 (HO-1, NQO1 and GST) expression were significantly downregulated by plumbagin treatment. Pro-inflammatory cytokine expressions were significantly abrogated by plumbagin treatment. Conclusions This study shows the protective role of plumbagin against myocardial I/R injury by regulating antioxidant and inflammatory mechanisms.
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Affiliation(s)
- Shi-Xun Wang
- Department of Cardiology, Weifang People's Hospital, Weifang, Shandong, China (mainland)
| | - Jian Wang
- Department of Cardiology, Weifang People's Hospital, Weifang, Shandong, China (mainland)
| | - Jing-Bo Shao
- Department of Cardiology, Weifang People's Hospital, Weifang, Shandong, China (mainland)
| | - Wei-Ning Tang
- Department of Cardiology, Weifang People's Hospital, Weifang, Shandong, China (mainland)
| | - Jing-Quan Zhong
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, Shandong, China (mainland)
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95
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Chen QJ, Lai HM, Zhao L, Ma YT, Li XM, Zhai H, Zhou Y, He CH, Chen BD, Liu F, Yang YN. Association Between theNFKB1-94ins/del ATTG Polymorphism (rs28362491) and Coronary Artery Disease: A Systematic Review and Meta-Analysis. Genet Test Mol Biomarkers 2016; 20:105-11. [PMID: 26799199 DOI: 10.1089/gtmb.2015.0242] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Qing-Jie Chen
- Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
- Xinjiang Key Laboratory of Cardiovascular Disease Research, Urumqi, China
- Clinical Research Institute of Xinjiang Medical University, Urumqi, China
| | - Hong-Mei Lai
- Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
- Department of Cardiology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, China
| | - Long Zhao
- Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
- Xinjiang Key Laboratory of Cardiovascular Disease Research, Urumqi, China
| | - Yi-Tong Ma
- Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
- Xinjiang Key Laboratory of Cardiovascular Disease Research, Urumqi, China
- Clinical Research Institute of Xinjiang Medical University, Urumqi, China
| | - Xiao-Mei Li
- Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
- Xinjiang Key Laboratory of Cardiovascular Disease Research, Urumqi, China
- Clinical Research Institute of Xinjiang Medical University, Urumqi, China
| | - Hui Zhai
- Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
- Xinjiang Key Laboratory of Cardiovascular Disease Research, Urumqi, China
- Clinical Research Institute of Xinjiang Medical University, Urumqi, China
| | - Yun Zhou
- Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
- Xinjiang Key Laboratory of Cardiovascular Disease Research, Urumqi, China
- Clinical Research Institute of Xinjiang Medical University, Urumqi, China
| | - Chun-Hui He
- Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
- Xinjiang Key Laboratory of Cardiovascular Disease Research, Urumqi, China
- Clinical Research Institute of Xinjiang Medical University, Urumqi, China
| | - Bang-Dang Chen
- Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
- Xinjiang Key Laboratory of Cardiovascular Disease Research, Urumqi, China
| | - Fen Liu
- Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
- Xinjiang Key Laboratory of Cardiovascular Disease Research, Urumqi, China
| | - Yi-Ning Yang
- Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
- Xinjiang Key Laboratory of Cardiovascular Disease Research, Urumqi, China
- Clinical Research Institute of Xinjiang Medical University, Urumqi, China
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Wang YH, Zhao WJ, Zheng WJ, Mao L, Lian HZ, Hu X, Hua ZC. Effects of Different Zinc Species on Cellar Zinc Distribution, Cell Cycle, Apoptosis and Viability in MDAMB231 Cells. Biol Trace Elem Res 2016. [PMID: 26198133 DOI: 10.1007/s12011-015-0377-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Intracellular metal elements exist in mammalian cells with the concentration range from picomoles per litre to micromoles per litre and play a considerable role in various biological procedures. Element provided by different species can influence the availability and distribution of the element in a cell and could lead to different biological effects on the cell's growth and function. Zinc as an abundant and widely distributed essential trace element, is involved in numerous and relevant physiological functions. Zinc homeostasis in cells, which is regulated by metallothioneins, zinc transporter/SLC30A, Zrt-/Irt-like proteins/SLC39A and metal-response element-binding transcription factor-1 (MTF-1), is crucial for normal cellular functioning. In this study, we investigated the influences of different zinc species, zinc sulphate, zinc gluconate and bacitracin zinc, which represented inorganic, organic and biological zinc species, respectively, on cell cycle, viability and apoptosis in MDAMB231 cells. It was found that the responses of cell cycle, apoptosis and death to different zinc species in MDAMB231 cells are different. Western blot analysis of the expression of several key proteins in regulating zinc-related transcription, cell cycle, apoptosis, including MTF-1, cyclin B1, cyclin D1, caspase-8 and caspase-9 in treated cells further confirmed the observed results on cell level.
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Affiliation(s)
- Yan-hong Wang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering and Center of Materials Analysis, Nanjing University, 22 Hankou Road, Nanjing, 210093, China
| | - Wen-jie Zhao
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering and Center of Materials Analysis, Nanjing University, 22 Hankou Road, Nanjing, 210093, China
| | - Wei-juan Zheng
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Science, Nanjing University, 22 Hankou Road, Nanjing, 210093, China.
| | - Li Mao
- MOE Key Laboratory of Modern Toxicology, School of Public Health, Nanjing Medical University, 818 East Tian-Yuan Road, Nanjing, 211166, China
| | - Hong-zhen Lian
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering and Center of Materials Analysis, Nanjing University, 22 Hankou Road, Nanjing, 210093, China.
| | - Xin Hu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering and Center of Materials Analysis, Nanjing University, 22 Hankou Road, Nanjing, 210093, China
| | - Zi-chun Hua
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Science, Nanjing University, 22 Hankou Road, Nanjing, 210093, China
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Sarkar J, Chowdhury A, Chakraborti T, Chakraborti S. Cross-talk between NADPH oxidase-PKCα-p(38)MAPK and NF-κB-MT1MMP in activating proMMP-2 by ET-1 in pulmonary artery smooth muscle cells. Mol Cell Biochem 2016; 415:13-28. [PMID: 26910780 DOI: 10.1007/s11010-016-2673-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2015] [Accepted: 02/17/2016] [Indexed: 12/27/2022]
Abstract
Treatment of bovine pulmonary artery smooth muscle cells with endothelin-1 (ET-1) caused an increase in the expression and activation of proMMP-2 in the cells. The present study was undertaken to determine the underlying mechanisms involved in this scenario. We demonstrated that (i) pretreatment with NADPH oxidase inhibitor, apocynin; PKC-α inhibitor, Go6976; p(38)MAPK inhibitor SB203580 and NF-κB inhibitor, Bay11-7082 inhibited the expression and activation of proMMP-2 induced by ET-1; (ii) ET-1 treatment to the cells stimulated NADPH oxidase and PKCα activity, p(38)MAPK phosphorylation as well as NF-κB activation by translocation of NF-κBp65 subunit from cytosol to the nucleus, and subsequently by increasing its DNA-binding activity; (iii) ET-1 increases MT1-MMP expression, which was inhibited upon pretreatment with apocynin, Go6976, SB293580, and Bay 11-7082; (iv) ET-1 treatment to the cells downregulated TIMP-2 level. Although apocynin and Go6976 pretreatment reversed ET-1 effect on TIMP-2 level, yet pretreatment of the cells with SB203580 and Bay 11-7082 did not show any discernible change in TIMP-2 level by ET-1. Overall, our results suggest that ET-1-induced activation of proMMP-2 is mediated via cross-talk between NADPH oxidase-PKCα-p(38)MAPK and NFκB-MT1MMP signaling pathways along with a marked decrease in TIMP-2 expression in the cells.
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Affiliation(s)
- Jaganmay Sarkar
- Department of Biochemistry and Biophysics, University of Kalyani, Kalyani, West Bengal, 741235, India
| | - Animesh Chowdhury
- Department of Biochemistry and Biophysics, University of Kalyani, Kalyani, West Bengal, 741235, India
| | - Tapati Chakraborti
- Department of Biochemistry and Biophysics, University of Kalyani, Kalyani, West Bengal, 741235, India
| | - Sajal Chakraborti
- Department of Biochemistry and Biophysics, University of Kalyani, Kalyani, West Bengal, 741235, India.
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Wang X, Tang SA, Wang R, Qiu Y, Jin M, Kong D. Inhibitory Effects of JEUD-38, a New Sesquiterpene Lactone from Inula japonica Thunb, on LPS-Induced iNOS Expression in RAW264.7 Cells. Inflammation 2016; 38:941-8. [PMID: 25399322 DOI: 10.1007/s10753-014-0056-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
We isolated JEUD-38, a new sesquiterpene lactone from Inula japonica Thunb. JEUD-38 dramatically attenuated lipopolysaccharide (LPS)-induced nitric oxide (NO) production. Consistent with this finding, the protein expression of inducible nitric oxide synthase (iNOS) was blocked by JEUD-38 in a concentration-dependent manner. To elucidate the mechanism, we examined the effect of JEUD-38 on LPS-stimulated nuclear factor-κB (NF-κB) nuclear translocation, inhibitory factor-κB (IκB) phosphorylation, and degradation. JEUD-38 reduced the translocation of p65, via abrogating IκB-α phosphorylation and degradation. In addition, JEUD-38 inhibited LPS-stimulated phosphorylation of mitogen-activated protein kinases (MAPKs) including extracellular signal-regulated kinase 1/2 (ERK1/2), c-Jun N-terminal kinase (JNK), and p38. Since iNOS as well as the upstream NF-κB and MAPKs are known to be closely involved in inflammation, these results suggest that JEUD-38 is a promising candidate for prevention and therapy of inflammatory diseases.
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Affiliation(s)
- Xiaoqing Wang
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, 300070, China
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Does the Interdependence between Oxidative Stress and Inflammation Explain the Antioxidant Paradox? OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:5698931. [PMID: 26881031 PMCID: PMC4736408 DOI: 10.1155/2016/5698931] [Citation(s) in RCA: 619] [Impact Index Per Article: 77.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2015] [Revised: 10/29/2015] [Accepted: 11/19/2015] [Indexed: 12/13/2022]
Abstract
Oxidative stress has been implicated in many chronic diseases. However, antioxidant trials are so far largely unsuccessful as a preventive or curative measure. Chronic low-grade inflammatory process, on the other hand, plays a central role in the pathogenesis of a number of chronic diseases. Oxidative stress and inflammation are closely related pathophysiological processes, one of which can be easily induced by another. Thus, both processes are simultaneously found in many pathological conditions. Therefore, the failure of antioxidant trials might result from failure to select appropriate agents that specifically target both inflammation and oxidative stress or failure to use both antioxidants and anti-inflammatory agents simultaneously or use of nonselective agents that block some of the oxidative and/or inflammatory pathways but exaggerate the others. To examine whether the interdependence between oxidative stress and inflammation can explain the antioxidant paradox we discussed in the present review the basic aspects of oxidative stress and inflammation and their relationship and dependence.
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100
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Zhao H, Liu Z, Liu W, Han X, Zhao M. Betulin attenuates lung and liver injuries in sepsis. Int Immunopharmacol 2015; 30:50-56. [PMID: 26644168 DOI: 10.1016/j.intimp.2015.11.028] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Revised: 11/13/2015] [Accepted: 11/22/2015] [Indexed: 12/19/2022]
Abstract
Sepsis is a complex condition with unacceptable mortality. Betulin is a natural extract with multiple bioactivities. This study aims to evaluate the potential effects of betulin on lung and liver injury in sepsis. Cecal ligation and puncture was used to establish the rat model of sepsis. A single dose of 4mg/kg or 8mg/kg betulin was injected intraperitoneally immediately after the model establishment. The survival rate was recorded every 12h for 96h. The organ injury was examined using hematoxylin and eosin staining and serum biochemical test. The levels of proinflammatory cytokines and high mobility group box 1 in the serum were measured using ELISA. Western blotting was used to detect the expression of proteins in NF-κB and MAPK signaling pathways. Betulin treatment significantly improved the survival rate of septic rats, and attenuated lung and liver injury in sepsis, including the reduction of lung wet/dry weight ratio and activities of alanine aminotransferase and aspartate aminotransferase in the serum. In addition, levels of tumor necrosis factor-α, interleukin-1β, interleukin-6 and high mobility group box 1 in the serum were also lowered by betulin treatment. Moreover, sepsis-induced activation of the NF-κB and MAPK signaling pathway was inhibited by betulin as well. Our findings demonstrate the protective effect of betulin in lung and liver injury in sepsis. This protection may be mediated by its anti-inflammatory and NF-κB and MAPK inhibitory effects.
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Affiliation(s)
- Hongyu Zhao
- Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang 110004, People's Republic of China.
| | - Zhenning Liu
- Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang 110004, People's Republic of China
| | - Wei Liu
- Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang 110004, People's Republic of China
| | - Xinfei Han
- Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang 110004, People's Republic of China
| | - Min Zhao
- Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang 110004, People's Republic of China
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